12712693720 has 32 divisors (see below), whose sum is σ = 29268763920. Its totient is φ = 4966819200.

The previous prime is 12712693703. The next prime is 12712693751. The reversal of 12712693720 is 2739621721.

It is a super-2 number, since 2×12712693720² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 3693831 + ... + 3697270.

Almost surely, 2^12712693720 is an apocalyptic number.

12712693720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12712693720 is an abundant number, since it is smaller than the sum of its proper divisors (16556070200).

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

12712693720 is a wasteful number, since it uses less digits than its factorization.

12712693720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391155 (or 7391151 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 12712693720 in words is "twelve billion, seven hundred twelve million, six hundred ninety-three thousand, seven hundred twenty".