1639040936960 has 132 divisors (see below), whose sum is σ = 4573701054432. Its totient is φ = 561956806656.

The previous prime is 1639040936933. The next prime is 1639040936983. The reversal of 1639040936960 is 696390409361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 1639040936896 and 1639040936905.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3015704 + ... + 3517463.

Almost surely, 2^{1639040936960} is an apocalyptic number.

1639040936960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1639040936960 is an abundant number, since it is smaller than the sum of its proper divisors (2934660117472).

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

1639040936960 is an equidigital number, since it uses as much as digits as its factorization.

1639040936960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533206 (or 6533181 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 56.

The spelling of 1639040936960 in words is "one trillion, six hundred thirty-nine billion, forty million, nine hundred thirty-six thousand, nine hundred sixty".