3816287500644 has 72 divisors (see below), whose sum is σ = 10390599259040. Its totient is φ = 1177116820992.

The previous prime is 3816287500621. The next prime is 3816287500657. The reversal of 3816287500644 is 4460057826183.

It is a happy number.

3816287500644 is a `hidden beast` number, since 3 + 8 + 1 + 628 + 7 + 5 + 0 + 0 + 6 + 4 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64846957 + ... + 64905780.

Almost surely, 2^{3816287500644} is an apocalyptic number.

It is an amenable number.

3816287500644 is an abundant number, since it is smaller than the sum of its proper divisors (6574311758396).

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

3816287500644 is a wasteful number, since it uses less digits than its factorization.

3816287500644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129752809 (or 129752804 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 3816287500644 in words is "three trillion, eight hundred sixteen billion, two hundred eighty-seven million, five hundred thousand, six hundred forty-four".