66424022632644 has 48 divisors (see below), whose sum is σ = 161729799423360. Its totient is φ = 21178445460480.

The previous prime is 66424022632613. The next prime is 66424022632679. The reversal of 66424022632644 is 44623622042466.

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, 25326054 + ... + 27825474.

It is an arithmetic number, because the mean of its divisors is an integer number (3369370821320).

Almost surely, 2^{66424022632644} is an apocalyptic number.

It is an amenable number.

66424022632644 is an abundant number, since it is smaller than the sum of its proper divisors (95305776790716).

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

66424022632644 is a wasteful number, since it uses less digits than its factorization.

66424022632644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595740 (or 2595738 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 51.

The spelling of 66424022632644 in words is "sixty-six trillion, four hundred twenty-four billion, twenty-two million, six hundred thirty-two thousand, six hundred forty-four".