66588955836 has 48 divisors (see below), whose sum is σ = 167348313888. Its totient is φ = 20486188800.

The previous prime is 66588955831. The next prime is 66588955841. The reversal of 66588955836 is 63855988566.

It is an interprime number because it is at equal distance from previous prime (66588955831) and next prime (66588955841).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66588955831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370926 + ... + 1418666.

It is an arithmetic number, because the mean of its divisors is an integer number (3486423206).

Almost surely, 2^66588955836 is an apocalyptic number.

It is an amenable number.

66588955836 is an abundant number, since it is smaller than the sum of its proper divisors (100759358052).

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

66588955836 is a wasteful number, since it uses less digits than its factorization.

66588955836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56702 (or 56700 counting only the distinct ones).

The product of its digits is 373248000, while the sum is 69.

The spelling of 66588955836 in words is "sixty-six billion, five hundred eighty-eight million, nine hundred fifty-five thousand, eight hundred thirty-six".