65861874104 has 32 divisors (see below), whose sum is σ = 137280339840. Its totient is φ = 29417212800.

The previous prime is 65861874083. The next prime is 65861874119. The reversal of 65861874104 is 40147816856.

It is a super-2 number, since 2×65861874104² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10211087 + ... + 10217534.

It is an arithmetic number, because the mean of its divisors is an integer number (4290010620).

Almost surely, 2^65861874104 is an apocalyptic number.

It is an amenable number.

65861874104 is an abundant number, since it is smaller than the sum of its proper divisors (71418465736).

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

65861874104 is a wasteful number, since it uses less digits than its factorization.

65861874104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428671 (or 20428667 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 65861874104 in words is "sixty-five billion, eight hundred sixty-one million, eight hundred seventy-four thousand, one hundred four".