66895004000 has 96 divisors (see below), whose sum is σ = 179303054112. Its totient is φ = 24325440000.

The previous prime is 66895003957. The next prime is 66895004023. The reversal of 66895004000 is 40059866.

It is a congruent 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, 716171 + ... + 804170.

It is an arithmetic number, because the mean of its divisors is an integer number (1867740147).

Almost surely, 2^66895004000 is an apocalyptic number.

It is an amenable number.

66895004000 is an abundant number, since it is smaller than the sum of its proper divisors (112408050112).

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

66895004000 is a wasteful number, since it uses less digits than its factorization.

66895004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520377 (or 1520359 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 66895004000 in words is "sixty-six billion, eight hundred ninety-five million, four thousand".