1640037108372 has 72 divisors (see below), whose sum is σ = 4184790271200. Its totient is φ = 499630435200.

The previous prime is 1640037108371. The next prime is 1640037108383. The reversal of 1640037108372 is 2738017300461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640037108371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3798622 + ... + 4208277.

It is an arithmetic number, because the mean of its divisors is an integer number (58122087100).

Almost surely, 2^{1640037108372} is an apocalyptic number.

1640037108372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1640037108372 is an abundant number, since it is smaller than the sum of its proper divisors (2544753162828).

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

1640037108372 is a wasteful number, since it uses less digits than its factorization.

1640037108372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8007033 (or 8007018 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 1640037108372 in words is "one trillion, six hundred forty billion, thirty-seven million, one hundred eight thousand, three hundred seventy-two".