66410563074 has 32 divisors (see below), whose sum is σ = 134064612864. Its totient is φ = 21929806080.

The previous prime is 66410563061. The next prime is 66410563091. The reversal of 66410563074 is 47036501466.

It is a Curzon 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, 1368079 + ... + 1415789.

It is an arithmetic number, because the mean of its divisors is an integer number (4189519152).

Almost surely, 2^66410563074 is an apocalyptic number.

66410563074 is an abundant number, since it is smaller than the sum of its proper divisors (67654049790).

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

66410563074 is a wasteful number, since it uses less digits than its factorization.

66410563074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49882.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 66410563074 in words is "sixty-six billion, four hundred ten million, five hundred sixty-three thousand, seventy-four".