66525470274 has 16 divisors (see below), whose sum is σ = 133136303040. Its totient is φ = 22160929680.

The previous prime is 66525470261. The next prime is 66525470281. The reversal of 66525470274 is 47207452566.

It is a Curzon 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, 3546637 + ... + 3565344.

It is an arithmetic number, because the mean of its divisors is an integer number (8321018940).

Almost surely, 2^66525470274 is an apocalyptic number.

66525470274 is an abundant number, since it is smaller than the sum of its proper divisors (66610832766).

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

66525470274 is a wasteful number, since it uses less digits than its factorization.

66525470274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113545.

The product of its (nonzero) digits is 2822400, while the sum is 48.

The spelling of 66525470274 in words is "sixty-six billion, five hundred twenty-five million, four hundred seventy thousand, two hundred seventy-four".