64501988097022 has 32 divisors (see below), whose sum is σ = 111304104721920. Its totient is φ = 27461702000160.

The previous prime is 64501988096969. The next prime is 64501988097023. The reversal of 64501988097022 is 22079088910546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64501988097023) 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, 10409754 + ... + 15406717.

It is an arithmetic number, because the mean of its divisors is an integer number (3478253272560).

Almost surely, 2^{64501988097022} is an apocalyptic number.

64501988097022 is a deficient number, since it is larger than the sum of its proper divisors (46802116624898).

64501988097022 is a wasteful number, since it uses less digits than its factorization.

64501988097022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25817656.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 64501988097022 in words is "sixty-four trillion, five hundred one billion, nine hundred eighty-eight million, ninety-seven thousand, twenty-two".