12762502640 has 40 divisors (see below), whose sum is σ = 29740492320. Its totient is φ = 5093358336.

The previous prime is 12762502631. The next prime is 12762502663. The reversal of 12762502640 is 4620526721.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 12762502640.

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, 146579 + ... + 216818.

It is an arithmetic number, because the mean of its divisors is an integer number (743512308).

Almost surely, 2^12762502640 is an apocalyptic number.

12762502640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12762502640 is an abundant number, since it is smaller than the sum of its proper divisors (16977989680).

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

12762502640 is a wasteful number, since it uses less digits than its factorization.

12762502640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363849 (or 363843 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 12762502640 in words is "twelve billion, seven hundred sixty-two million, five hundred two thousand, six hundred forty".