64194866706158 has 16 divisors (see below), whose sum is σ = 101961899629920. Its totient is φ = 30207764852736.

The previous prime is 64194866706049. The next prime is 64194866706163. The reversal of 64194866706158 is 85160766849146.

It is a super-2 number, since 2×64194866706158² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64194866706091 and 64194866706100.

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, 48847778 + ... + 50144741.

It is an arithmetic number, because the mean of its divisors is an integer number (6372618726870).

Almost surely, 2^{64194866706158} is an apocalyptic number.

64194866706158 is a deficient number, since it is larger than the sum of its proper divisors (37767032923762).

64194866706158 is a wasteful number, since it uses less digits than its factorization.

64194866706158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99011611.

The product of its (nonzero) digits is 418037760, while the sum is 71.

The spelling of 64194866706158 in words is "sixty-four trillion, one hundred ninety-four billion, eight hundred sixty-six million, seven hundred six thousand, one hundred fifty-eight".