64946772924 has 96 divisors (see below), whose sum is σ = 169263790080. Its totient is φ = 19211774400.

The previous prime is 64946772923. The next prime is 64946772937. The reversal of 64946772924 is 42927764946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64946772923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18496329 + ... + 18499839.

It is an arithmetic number, because the mean of its divisors is an integer number (1763164480).

Almost surely, 2^64946772924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64946772924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84631895040).

64946772924 is an abundant number, since it is smaller than the sum of its proper divisors (104317017156).

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

64946772924 is a wasteful number, since it uses less digits than its factorization.

64946772924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831 (or 6829 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 60.

The spelling of 64946772924 in words is "sixty-four billion, nine hundred forty-six million, seven hundred seventy-two thousand, nine hundred twenty-four".