66125695700 has 36 divisors (see below), whose sum is σ = 143530188480. Its totient is φ = 26443379040.

The previous prime is 66125695697. The next prime is 66125695709. The reversal of 66125695700 is 759652166.

It is a happy number.

66125695700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66125695709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308021 + ... + 476579.

It is an arithmetic number, because the mean of its divisors is an integer number (3986949680).

Almost surely, 2^66125695700 is an apocalyptic number.

It is an amenable number.

66125695700 is an abundant number, since it is smaller than the sum of its proper divisors (77404492780).

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

66125695700 is a wasteful number, since it uses less digits than its factorization.

66125695700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172496 (or 172489 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 66125695700 in words is "sixty-six billion, one hundred twenty-five million, six hundred ninety-five thousand, seven hundred".