64199655604 has 24 divisors (see below), whose sum is σ = 130575574080. Its totient is φ = 27047796096.

The previous prime is 64199655577. The next prime is 64199655659. The reversal of 64199655604 is 40655699146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19429237 + ... + 19432540.

It is an arithmetic number, because the mean of its divisors is an integer number (5440648920).

Almost surely, 2^64199655604 is an apocalyptic number.

It is an amenable number.

64199655604 is an abundant number, since it is smaller than the sum of its proper divisors (66375918476).

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

64199655604 is a wasteful number, since it uses less digits than its factorization.

64199655604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38861847 (or 38861845 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 64199655604 in words is "sixty-four billion, one hundred ninety-nine million, six hundred fifty-five thousand, six hundred four".