64498733964 has 72 divisors (see below), whose sum is σ = 188423333280. Its totient is φ = 18221144832.

The previous prime is 64498733953. The next prime is 64498733987. The reversal of 64498733964 is 46933789446.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1415479 + ... + 1460334.

It is an arithmetic number, because the mean of its divisors is an integer number (2616990740).

Almost surely, 2^64498733964 is an apocalyptic number.

It is an amenable number.

64498733964 is an abundant number, since it is smaller than the sum of its proper divisors (123924599316).

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

64498733964 is a wasteful number, since it uses less digits than its factorization.

64498733964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875919 (or 2875914 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 64498733964 in words is "sixty-four billion, four hundred ninety-eight million, seven hundred thirty-three thousand, nine hundred sixty-four".