64826999994 has 32 divisors (see below), whose sum is σ = 129974906880. Its totient is φ = 21555583472.

The previous prime is 64826999987. The next prime is 64826999999. The reversal of 64826999994 is 49999962846.

It is not an unprimeable number, because it can be changed into a prime (64826999999) 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, 4233019 + ... + 4248305.

It is an arithmetic number, because the mean of its divisors is an integer number (4061715840).

Almost surely, 2^64826999994 is an apocalyptic number.

64826999994 is an abundant number, since it is smaller than the sum of its proper divisors (65147906886).

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

64826999994 is a wasteful number, since it uses less digits than its factorization.

64826999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16994.

The product of its digits is 544195584, while the sum is 75.

The spelling of 64826999994 in words is "sixty-four billion, eight hundred twenty-six million, nine hundred ninety-nine thousand, nine hundred ninety-four".