16312738512 has 40 divisors (see below), whose sum is σ = 48161419456. Its totient is φ = 4660782336.

The previous prime is 16312738441. The next prime is 16312738517. The reversal of 16312738512 is 21583721361.

It is a happy number.

It is a super-2 number, since 2×16312738512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16312738517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24274573 + ... + 24275244.

Almost surely, 2^16312738512 is an apocalyptic number.

16312738512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16312738512 is an abundant number, since it is smaller than the sum of its proper divisors (31848680944).

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

16312738512 is a wasteful number, since it uses less digits than its factorization.

16312738512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48549835 (or 48549829 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The spelling of 16312738512 in words is "sixteen billion, three hundred twelve million, seven hundred thirty-eight thousand, five hundred twelve".