66437670252 has 48 divisors (see below), whose sum is σ = 155784918240. Its totient is φ = 22037041152.

The previous prime is 66437670239. The next prime is 66437670269. The reversal of 66437670252 is 25207673466.

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, 2179774 + ... + 2210042.

It is an arithmetic number, because the mean of its divisors is an integer number (3245519130).

Almost surely, 2^66437670252 is an apocalyptic number.

It is an amenable number.

66437670252 is an abundant number, since it is smaller than the sum of its proper divisors (89347247988).

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

66437670252 is a wasteful number, since it uses less digits than its factorization.

66437670252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31170 (or 31168 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 66437670252 in words is "sixty-six billion, four hundred thirty-seven million, six hundred seventy thousand, two hundred fifty-two".