16231270520 has 32 divisors (see below), whose sum is σ = 37139353200. Its totient is φ = 6382464768.

The previous prime is 16231270493. The next prime is 16231270547. The reversal of 16231270520 is 2507213261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16231270493) and next prime (16231270547).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3436469 + ... + 3441188.

Almost surely, 2^16231270520 is an apocalyptic number.

16231270520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16231270520 is an abundant number, since it is smaller than the sum of its proper divisors (20908082680).

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

16231270520 is a wasteful number, since it uses less digits than its factorization.

16231270520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877727 (or 6877723 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 16231270520 its reverse (2507213261), we get a palindrome (18738483781).

The spelling of 16231270520 in words is "sixteen billion, two hundred thirty-one million, two hundred seventy thousand, five hundred twenty".