61687301543493 has 8 divisors (see below), whose sum is σ = 82249823402688. Its totient is φ = 41124823689984.

The previous prime is 61687301543479. The next prime is 61687301543519. The reversal of 61687301543493 is 39434510378616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61687301543493 - 2⁴ = 61687301543477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61687301548493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7578396 + ... + 13446437.

It is an arithmetic number, because the mean of its divisors is an integer number (10281227925336).

Almost surely, 2^{61687301543493} is an apocalyptic number.

It is an amenable number.

61687301543493 is a deficient number, since it is larger than the sum of its proper divisors (20562521859195).

61687301543493 is a wasteful number, since it uses less digits than its factorization.

61687301543493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22002843.

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 61687301543493 in words is "sixty-one trillion, six hundred eighty-seven billion, three hundred one million, five hundred forty-three thousand, four hundred ninety-three".