72685786641884 has 48 divisors (see below), whose sum is σ = 137389829771040. Its totient is φ = 33448106926080.

The previous prime is 72685786641841. The next prime is 72685786641971. The reversal of 72685786641884 is 48814668758627.

It is a junction number, because it is equal to n+sod(n) for n = 72685786641799 and 72685786641808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150443219 + ... + 150925589.

It is an arithmetic number, because the mean of its divisors is an integer number (2862288120230).

Almost surely, 2^{72685786641884} is an apocalyptic number.

It is an amenable number.

72685786641884 is a deficient number, since it is larger than the sum of its proper divisors (64704043129156).

72685786641884 is a wasteful number, since it uses less digits than its factorization.

72685786641884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490950 (or 490948 counting only the distinct ones).

The product of its digits is 6936330240, while the sum is 80.

The spelling of 72685786641884 in words is "seventy-two trillion, six hundred eighty-five billion, seven hundred eighty-six million, six hundred forty-one thousand, eight hundred eighty-four".