64419988696 has 32 divisors (see below), whose sum is σ = 141253136640. Its totient is φ = 26966505888.

The previous prime is 64419988693. The next prime is 64419988697. The reversal of 64419988696 is 69688991446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64419988691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13373836 + ... + 13378651.

It is an arithmetic number, because the mean of its divisors is an integer number (4414160520).

Almost surely, 2^64419988696 is an apocalyptic number.

It is an amenable number.

64419988696 is an abundant number, since it is smaller than the sum of its proper divisors (76833147944).

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

64419988696 is a wasteful number, since it uses less digits than its factorization.

64419988696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26752543 (or 26752539 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 70.

The spelling of 64419988696 in words is "sixty-four billion, four hundred nineteen million, nine hundred eighty-eight thousand, six hundred ninety-six".