1351637005644 has 72 divisors (see below), whose sum is σ = 3428283942720. Its totient is φ = 449012374272.

The previous prime is 1351637005633. The next prime is 1351637005657. The reversal of 1351637005644 is 4465007361531.

1351637005644 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 637 + 0 + 0 + 5 + 6 + 4 + 4 = 666.

It is a super-4 number, since 4×1351637005644⁴ (a number of 50 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1351637005644.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13434294 + ... + 13534530.

It is an arithmetic number, because the mean of its divisors is an integer number (47615054760).

Almost surely, 2^{1351637005644} is an apocalyptic number.

It is an amenable number.

1351637005644 is an abundant number, since it is smaller than the sum of its proper divisors (2076646937076).

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

1351637005644 is a wasteful number, since it uses less digits than its factorization.

1351637005644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101519 (or 101514 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 1351637005644 in words is "one trillion, three hundred fifty-one billion, six hundred thirty-seven million, five thousand, six hundred forty-four".