66764735200 has 72 divisors (see below), whose sum is σ = 164953301688. Its totient is φ = 26384110080.

The previous prime is 66764735143. The next prime is 66764735203. The reversal of 66764735200 is 253746766.

66764735200 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 2×66764735200² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66764735203) 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, 436347 + ... + 569146.

It is an arithmetic number, because the mean of its divisors is an integer number (2291018079).

Almost surely, 2^66764735200 is an apocalyptic number.

It is an amenable number.

66764735200 is an abundant number, since it is smaller than the sum of its proper divisors (98188566488).

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

66764735200 is a wasteful number, since it uses less digits than its factorization.

66764735200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005596 (or 1005583 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 66764735200 in words is "sixty-six billion, seven hundred sixty-four million, seven hundred thirty-five thousand, two hundred".