64124311155 has 16 divisors (see below), whose sum is σ = 107998840320. Its totient is φ = 32399651808.

The previous prime is 64124311127. The next prime is 64124311169. The reversal of 64124311155 is 55111342146.

It is not a de Polignac number, because 64124311155 - 2¹¹ = 64124309107 is a prime.

It is a super-2 number, since 2×64124311155² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112498507 + ... + 112499076.

It is an arithmetic number, because the mean of its divisors is an integer number (6749927520).

Almost surely, 2^64124311155 is an apocalyptic number.

64124311155 is a deficient number, since it is larger than the sum of its proper divisors (43874529165).

64124311155 is a wasteful number, since it uses less digits than its factorization.

64124311155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224997610.

The product of its digits is 14400, while the sum is 33.

The spelling of 64124311155 in words is "sixty-four billion, one hundred twenty-four million, three hundred eleven thousand, one hundred fifty-five".