920731153797 has 48 divisors (see below), whose sum is σ = 1637042138368. Its totient is φ = 485604979200.

The previous prime is 920731153781. The next prime is 920731153829. The reversal of 920731153797 is 797351137029.

920731153797 is a `hidden beast` number, since 9 + 2 + 0 + 7 + 3 + 11 + 537 + 97 = 666.

It is not a de Polignac number, because 920731153797 - 2⁴ = 920731153781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920731153697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7690797 + ... + 7809597.

Almost surely, 2^920731153797 is an apocalyptic number.

It is an amenable number.

920731153797 is a deficient number, since it is larger than the sum of its proper divisors (716310984571).

920731153797 is a wasteful number, since it uses less digits than its factorization.

920731153797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128290 (or 128287 counting only the distinct ones).

The product of its (nonzero) digits is 2500470, while the sum is 54.

The spelling of 920731153797 in words is "nine hundred twenty billion, seven hundred thirty-one million, one hundred fifty-three thousand, seven hundred ninety-seven".