66645110102432 has 12 divisors (see below), whose sum is σ = 131207560514226. Its totient is φ = 33322555051200.

The previous prime is 66645110102407. The next prime is 66645110102453. The reversal of 66645110102432 is 23420101154666.

It can be written as a sum of positive squares in only one way, i.e., 48954034784656 + 17691075317776 = 6996716^2 + 4206076^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66645110102432.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041329845319 + ... + 1041329845382.

Almost surely, 2^{66645110102432} is an apocalyptic number.

It is an amenable number.

66645110102432 is a deficient number, since it is larger than the sum of its proper divisors (64562450411794).

66645110102432 is a wasteful number, since it uses less digits than its factorization.

66645110102432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082659690711 (or 2082659690703 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 66645110102432 in words is "sixty-six trillion, six hundred forty-five billion, one hundred ten million, one hundred two thousand, four hundred thirty-two".