13401042562661 has 32 divisors (see below), whose sum is σ = 15701694801408. Its totient is φ = 11324912901120.

The previous prime is 13401042562657. The next prime is 13401042562673. The reversal of 13401042562661 is 16626524010431.

It is not a de Polignac number, because 13401042562661 - 2² = 13401042562657 is a prime.

It is a super-2 number, since 2×13401042562661² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13401042562681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2264510 + ... + 5650671.

It is an arithmetic number, because the mean of its divisors is an integer number (490677962544).

Almost surely, 2^{13401042562661} is an apocalyptic number.

It is an amenable number.

13401042562661 is a deficient number, since it is larger than the sum of its proper divisors (2300652238747).

13401042562661 is a wasteful number, since it uses less digits than its factorization.

13401042562661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915421.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 13401042562661 in words is "thirteen trillion, four hundred one billion, forty-two million, five hundred sixty-two thousand, six hundred sixty-one".