9156553650641 has 4 divisors (see below), whose sum is σ = 9242128918512. Its totient is φ = 9070978382772.

The previous prime is 9156553650637. The next prime is 9156553650649. The reversal of 9156553650641 is 1460563556519.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9156553650641 - 2² = 9156553650637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9156553650649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42787633775 + ... + 42787633988.

It is an arithmetic number, because the mean of its divisors is an integer number (2310532229628).

Almost surely, 2^{9156553650641} is an apocalyptic number.

It is an amenable number.

9156553650641 is a deficient number, since it is larger than the sum of its proper divisors (85575267871).

9156553650641 is a wasteful number, since it uses less digits than its factorization.

9156553650641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85575267870.

The product of its (nonzero) digits is 14580000, while the sum is 56.

The spelling of 9156553650641 in words is "nine trillion, one hundred fifty-six billion, five hundred fifty-three million, six hundred fifty thousand, six hundred forty-one".