67520862464 has 144 divisors (see below), whose sum is σ = 152332125120. Its totient is φ = 29601792000.

The previous prime is 67520862449. The next prime is 67520862469. The reversal of 67520862464 is 46426802576.

It is not an unprimeable number, because it can be changed into a prime (67520862469) 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, 10272299 + ... + 10278869.

It is an arithmetic number, because the mean of its divisors is an integer number (1057861980).

Almost surely, 2^67520862464 is an apocalyptic number.

67520862464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67520862464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76166062560).

67520862464 is an abundant number, since it is smaller than the sum of its proper divisors (84811262656).

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

67520862464 is a wasteful number, since it uses less digits than its factorization.

67520862464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728 (or 6714 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 67520862464 in words is "sixty-seven billion, five hundred twenty million, eight hundred sixty-two thousand, four hundred sixty-four".