64622340156 has 24 divisors (see below), whose sum is σ = 164493229824. Its totient is φ = 19582527280.

The previous prime is 64622340131. The next prime is 64622340157. The reversal of 64622340156 is 65104322646.

64622340156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64622340157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244781460 + ... + 244781723.

It is an arithmetic number, because the mean of its divisors is an integer number (6853884576).

Almost surely, 2^64622340156 is an apocalyptic number.

64622340156 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64622340156 is an abundant number, since it is smaller than the sum of its proper divisors (99870889668).

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

64622340156 is a wasteful number, since it uses less digits than its factorization.

64622340156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489563201 (or 489563199 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 64622340156 in words is "sixty-four billion, six hundred twenty-two million, three hundred forty thousand, one hundred fifty-six".