64555332166004 has 12 divisors (see below), whose sum is σ = 112972602724800. Its totient is φ = 32277445673208.

The previous prime is 64555332165901. The next prime is 64555332166007. The reversal of 64555332166004 is 40066123355546.

It is a super-2 number, since 2×64555332166004² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64555332166007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54442574 + ... + 55615685.

It is an arithmetic number, because the mean of its divisors is an integer number (9414383560400).

Almost surely, 2^{64555332166004} is an apocalyptic number.

It is an amenable number.

64555332166004 is a deficient number, since it is larger than the sum of its proper divisors (48417270558796).

64555332166004 is a wasteful number, since it uses less digits than its factorization.

64555332166004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110204902 (or 110204900 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 64555332166004 in words is "sixty-four trillion, five hundred fifty-five billion, three hundred thirty-two million, one hundred sixty-six thousand, four".