66732237936 has 160 divisors (see below), whose sum is σ = 235749355520. Its totient is φ = 17599700736.

The previous prime is 66732237877. The next prime is 66732237941. The reversal of 66732237936 is 63973223766.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 809440 + ... + 888063.

It is an arithmetic number, because the mean of its divisors is an integer number (1473433472).

Almost surely, 2^66732237936 is an apocalyptic number.

It is an amenable number.

66732237936 is an abundant number, since it is smaller than the sum of its proper divisors (169017117584).

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

66732237936 is a wasteful number, since it uses less digits than its factorization.

66732237936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697540 (or 1697528 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 54.

The spelling of 66732237936 in words is "sixty-six billion, seven hundred thirty-two million, two hundred thirty-seven thousand, nine hundred thirty-six".