64839610158 has 16 divisors (see below), whose sum is σ = 129881535696. Its totient is φ = 21579484160.

The previous prime is 64839610153. The next prime is 64839610193. The reversal of 64839610158 is 85101693846.

It is a self number, because there is not a number n which added to its sum of digits gives 64839610158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64839610153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8425641 + ... + 8433332.

It is an arithmetic number, because the mean of its divisors is an integer number (8117595981).

Almost surely, 2^64839610158 is an apocalyptic number.

64839610158 is an abundant number, since it is smaller than the sum of its proper divisors (65041925538).

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

64839610158 is a wasteful number, since it uses less digits than its factorization.

64839610158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16859619.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 64839610158 in words is "sixty-four billion, eight hundred thirty-nine million, six hundred ten thousand, one hundred fifty-eight".