64056562878 has 128 divisors (see below), whose sum is σ = 165606359040. Its totient is φ = 16030224000.

The previous prime is 64056562841. The next prime is 64056562883. The reversal of 64056562878 is 87826565046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3269973 + ... + 3289503.

It is an arithmetic number, because the mean of its divisors is an integer number (1293799680).

Almost surely, 2^64056562878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64056562878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82803179520).

64056562878 is an abundant number, since it is smaller than the sum of its proper divisors (101549796162).

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

64056562878 is a wasteful number, since it uses less digits than its factorization.

64056562878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19814.

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 64056562878 in words is "sixty-four billion, fifty-six million, five hundred sixty-two thousand, eight hundred seventy-eight".