12651945040 has 240 divisors, whose sum is σ = 35781495552. Its totient is φ = 4144186368.

The previous prime is 12651945013. The next prime is 12651945161. The reversal of 12651945040 is 4054915621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7921522 + ... + 7923118.

Almost surely, 2^12651945040 is an apocalyptic number.

12651945040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12651945040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17890747776).

12651945040 is an abundant number, since it is smaller than the sum of its proper divisors (23129550512).

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

12651945040 is a wasteful number, since it uses less digits than its factorization.

12651945040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714 (or 1701 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 12651945040 in words is "twelve billion, six hundred fifty-one million, nine hundred forty-five thousand, forty".