154011253561 has 8 divisors (see below), whose sum is σ = 168865133184. Its totient is φ = 139299516720.

The previous prime is 154011253541. The next prime is 154011253573. The reversal of 154011253561 is 165352110451.

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

It is a cyclic number.

It is not a de Polignac number, because 154011253561 - 2²⁵ = 153977699129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154011253541) 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, 35533425 + ... + 35537758.

It is an arithmetic number, because the mean of its divisors is an integer number (21108141648).

Almost surely, 2^154011253561 is an apocalyptic number.

154011253561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

154011253561 is a deficient number, since it is larger than the sum of its proper divisors (14853879623).

154011253561 is a wasteful number, since it uses less digits than its factorization.

154011253561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71071391.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 154011253561 in words is "one hundred fifty-four billion, eleven million, two hundred fifty-three thousand, five hundred sixty-one".