64517076156 has 144 divisors (see below), whose sum is σ = 171491733504. Its totient is φ = 18757277952.

The previous prime is 64517076101. The next prime is 64517076161. The reversal of 64517076156 is 65167071546.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6160981 + ... + 6171443.

It is an arithmetic number, because the mean of its divisors is an integer number (1190914816).

Almost surely, 2^64517076156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64517076156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85745866752).

64517076156 is an abundant number, since it is smaller than the sum of its proper divisors (106974657348).

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

64517076156 is a wasteful number, since it uses less digits than its factorization.

64517076156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588 (or 10557 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 64517076156 in words is "sixty-four billion, five hundred seventeen million, seventy-six thousand, one hundred fifty-six".