66677725000 has 96 divisors (see below), whose sum is σ = 159593535360. Its totient is φ = 26103160000.

The previous prime is 66677724979. The next prime is 66677725027. The reversal of 66677725000 is 52777666.

66677725000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66677725000² (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 23 ways as a sum of consecutive naturals, for example, 1146627 + ... + 1203373.

It is an arithmetic number, because the mean of its divisors is an integer number (1662432660).

Almost surely, 2^66677725000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66677725000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79796767680).

66677725000 is an abundant number, since it is smaller than the sum of its proper divisors (92915810360).

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

66677725000 is an equidigital number, since it uses as much as digits as its factorization.

66677725000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56825 (or 56801 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 46.

The spelling of 66677725000 in words is "sixty-six billion, six hundred seventy-seven million, seven hundred twenty-five thousand".