64155655146 has 48 divisors (see below), whose sum is σ = 141068844000. Its totient is φ = 19436635680.

The previous prime is 64155655141. The next prime is 64155655169.

64155655146 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64155655095 and 64155655104.

It is not an unprimeable number, because it can be changed into a prime (64155655141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4566060 + ... + 4580088.

It is an arithmetic number, because the mean of its divisors is an integer number (2938934250).

Almost surely, 2^64155655146 is an apocalyptic number.

64155655146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64155655146 is an abundant number, since it is smaller than the sum of its proper divisors (76913188854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64155655146 is a wasteful number, since it uses less digits than its factorization.

64155655146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20355 (or 20344 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 48.

The spelling of 64155655146 in words is "sixty-four billion, one hundred fifty-five million, six hundred fifty-five thousand, one hundred forty-six".