921105172797 has 16 divisors (see below), whose sum is σ = 1232197843200. Its totient is φ = 612044338752.

The previous prime is 921105172789. The next prime is 921105172811. The reversal of 921105172797 is 797271501129.

It is not a de Polignac number, because 921105172797 - 2³ = 921105172789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921105172717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840079 + ... + 1596227.

It is an arithmetic number, because the mean of its divisors is an integer number (77012365200).

Almost surely, 2^921105172797 is an apocalyptic number.

It is an amenable number.

921105172797 is a deficient number, since it is larger than the sum of its proper divisors (311092670403).

921105172797 is a wasteful number, since it uses less digits than its factorization.

921105172797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757492.

The product of its (nonzero) digits is 555660, while the sum is 51.

The spelling of 921105172797 in words is "nine hundred twenty-one billion, one hundred five million, one hundred seventy-two thousand, seven hundred ninety-seven".