64889992865126 has 16 divisors (see below), whose sum is σ = 114351595818768. Its totient is φ = 27226570432800.

The previous prime is 64889992865119. The next prime is 64889992865177. The reversal of 64889992865126 is 62156829998846.

It is a super-2 number, since 2×64889992865126² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 113444043185 + ... + 113444043756.

It is an arithmetic number, because the mean of its divisors is an integer number (7146974738673).

Almost surely, 2^{64889992865126} is an apocalyptic number.

64889992865126 is a deficient number, since it is larger than the sum of its proper divisors (49461602953642).

64889992865126 is a wasteful number, since it uses less digits than its factorization.

64889992865126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226888086967.

The product of its digits is 6449725440, while the sum is 83.

The spelling of 64889992865126 in words is "sixty-four trillion, eight hundred eighty-nine billion, nine hundred ninety-two million, eight hundred sixty-five thousand, one hundred twenty-six".