12737391072 has 48 divisors (see below), whose sum is σ = 38212175232. Its totient is φ = 3639254400.

The previous prime is 12737391061. The next prime is 12737391077. The reversal of 12737391072 is 27019373721.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12737391072² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12737391077) 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, 9476554 + ... + 9477897.

It is an arithmetic number, because the mean of its divisors is an integer number (796086984).

Almost surely, 2^12737391072 is an apocalyptic number.

12737391072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12737391072 is an abundant number, since it is smaller than the sum of its proper divisors (25474784160).

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

12737391072 is a wasteful number, since it uses less digits than its factorization.

12737391072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18954471 (or 18954463 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 42.

The spelling of 12737391072 in words is "twelve billion, seven hundred thirty-seven million, three hundred ninety-one thousand, seventy-two".