231555637796 has 48 divisors (see below), whose sum is σ = 465999031680. Its totient is φ = 98620104960.

The previous prime is 231555637787. The next prime is 231555637823. The reversal of 231555637796 is 697736555132.

It is a super-2 number, since 2×231555637796² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7500440 + ... + 7531248.

It is an arithmetic number, because the mean of its divisors is an integer number (9708313160).

Almost surely, 2^231555637796 is an apocalyptic number.

It is an amenable number.

231555637796 is an abundant number, since it is smaller than the sum of its proper divisors (234443393884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231555637796 is a wasteful number, since it uses less digits than its factorization.

231555637796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32484 (or 32482 counting only the distinct ones).

The product of its digits is 35721000, while the sum is 59.

The spelling of 231555637796 in words is "two hundred thirty-one billion, five hundred fifty-five million, six hundred thirty-seven thousand, seven hundred ninety-six".