66562460004 has 12 divisors (see below), whose sum is σ = 155312406704. Its totient is φ = 22187486664.

The previous prime is 66562459981. The next prime is 66562460071. The reversal of 66562460004 is 40006426566.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×66562460004² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773435822 + ... + 2773435845.

Almost surely, 2^66562460004 is an apocalyptic number.

It is an amenable number.

66562460004 is an abundant number, since it is smaller than the sum of its proper divisors (88749946700).

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

66562460004 is a wasteful number, since it uses less digits than its factorization.

66562460004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546871674 (or 5546871672 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 66562460004 in words is "sixty-six billion, five hundred sixty-two million, four hundred sixty thousand, four".