1640063757375 has 64 divisors (see below), whose sum is σ = 3191890291200. Its totient is φ = 828663760800.

The previous prime is 1640063757341. The next prime is 1640063757379. The reversal of 1640063757375 is 5737573600461.

1640063757375 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 0 + 63 + 7 + 573 + 7 + 5 = 666.

It is not a de Polignac number, because 1640063757375 - 2⁸ = 1640063757119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640063757379) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12723897 + ... + 12852146.

It is an arithmetic number, because the mean of its divisors is an integer number (49873285800).

Almost surely, 2^{1640063757375} is an apocalyptic number.

1640063757375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1640063757375 is a deficient number, since it is larger than the sum of its proper divisors (1551826533825).

1640063757375 is a wasteful number, since it uses less digits than its factorization.

1640063757375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25576086 (or 25576070 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 54.

The spelling of 1640063757375 in words is "one trillion, six hundred forty billion, sixty-three million, seven hundred fifty-seven thousand, three hundred seventy-five".