636145351344 has 30 divisors (see below), whose sum is σ = 1780323448956. Its totient is φ = 212048450400.

The previous prime is 636145351297. The next prime is 636145351393. The reversal of 636145351344 is 443153541636.

636145351344 is a `hidden beast` number, since 6 + 3 + 61 + 4 + 535 + 13 + 44 = 666.

636145351344 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 636145351344.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2208837882 + ... + 2208838169.

Almost surely, 2^636145351344 is an apocalyptic number.

It is an amenable number.

636145351344 is an abundant number, since it is smaller than the sum of its proper divisors (1144178097612).

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

636145351344 is a wasteful number, since it uses less digits than its factorization.

636145351344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417676065 (or 4417676056 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 636145351344 in words is "six hundred thirty-six billion, one hundred forty-five million, three hundred fifty-one thousand, three hundred forty-four".