66767025572140 has 24 divisors (see below), whose sum is σ = 140612503726800. Its totient is φ = 26630286414528.

The previous prime is 66767025572113. The next prime is 66767025572189. The reversal of 66767025572140 is 4127552076766.

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, 4782731242 + ... + 4782745201.

It is an arithmetic number, because the mean of its divisors is an integer number (5858854321950).

Almost surely, 2^{66767025572140} is an apocalyptic number.

It is an amenable number.

66767025572140 is an abundant number, since it is smaller than the sum of its proper divisors (73845478154660).

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

66767025572140 is a wasteful number, since it uses less digits than its factorization.

66767025572140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565476801 (or 9565476799 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 58.

The spelling of 66767025572140 in words is "sixty-six trillion, seven hundred sixty-seven billion, twenty-five million, five hundred seventy-two thousand, one hundred forty".