64071954194 has 16 divisors (see below), whose sum is σ = 101852015328. Its totient is φ = 30124640832.

The previous prime is 64071954139. The next prime is 64071954239. The reversal of 64071954194 is 49145917046.

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, 800852 + ... + 877215.

It is an arithmetic number, because the mean of its divisors is an integer number (6365750958).

Almost surely, 2^64071954194 is an apocalyptic number.

64071954194 is a deficient number, since it is larger than the sum of its proper divisors (37780061134).

64071954194 is a wasteful number, since it uses less digits than its factorization.

64071954194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679209.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 64071954194 in words is "sixty-four billion, seventy-one million, nine hundred fifty-four thousand, one hundred ninety-four".