2640457388700 has 144 divisors (see below), whose sum is σ = 8627739143520. Its totient is φ = 692578944000.

The previous prime is 2640457388687. The next prime is 2640457388729. The reversal of 2640457388700 is 78837540462.

2640457388700 is a `hidden beast` number, since 2 + 6 + 40 + 457 + 3 + 88 + 70 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 7851261 + ... + 8180660.

Almost surely, 2^{2640457388700} is an apocalyptic number.

2640457388700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640457388700 is an abundant number, since it is smaller than the sum of its proper divisors (5987281754820).

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

2640457388700 is a wasteful number, since it uses less digits than its factorization.

2640457388700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16032005 (or 16031992 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 2640457388700 in words is "two trillion, six hundred forty billion, four hundred fifty-seven million, three hundred eighty-eight thousand, seven hundred".