64138106355 has 16 divisors (see below), whose sum is σ = 102625545120. Its totient is φ = 34205465088.

The previous prime is 64138106353. The next prime is 64138106369. The reversal of 64138106355 is 55360183146.

It is not a de Polignac number, because 64138106355 - 2¹ = 64138106353 is a prime.

It is a super-2 number, since 2×64138106355² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64138106353) 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, 307209 + ... + 471861.

It is an arithmetic number, because the mean of its divisors is an integer number (6414096570).

Almost surely, 2^64138106355 is an apocalyptic number.

64138106355 is a deficient number, since it is larger than the sum of its proper divisors (38487438765).

64138106355 is a wasteful number, since it uses less digits than its factorization.

64138106355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190630.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 64138106355 in words is "sixty-four billion, one hundred thirty-eight million, one hundred six thousand, three hundred fifty-five".