12072663640 has 64 divisors (see below), whose sum is σ = 27325188000. Its totient is φ = 4800399360.

The previous prime is 12072663587. The next prime is 12072663641. The reversal of 12072663640 is 4636627021.

It is a self number, because there is not a number n which added to its sum of digits gives 12072663640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12072663641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9822546 + ... + 9823774.

Almost surely, 2^12072663640 is an apocalyptic number.

12072663640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12072663640 is an abundant number, since it is smaller than the sum of its proper divisors (15252524360).

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

12072663640 is a wasteful number, since it uses less digits than its factorization.

12072663640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 12072663640 in words is "twelve billion, seventy-two million, six hundred sixty-three thousand, six hundred forty".