64060320636 has 480 divisors, whose sum is σ = 197365690368. Its totient is φ = 17955717120.

The previous prime is 64060320607. The next prime is 64060320661. The reversal of 64060320636 is 63602306046.

64060320636 is a `hidden beast` number, since 6 + 40 + 603 + 2 + 0 + 6 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64060320636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 249261820 + ... + 249262076.

Almost surely, 2^64060320636 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 64060320636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98682845184).

64060320636 is an abundant number, since it is smaller than the sum of its proper divisors (133305369732).

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

64060320636 is a wasteful number, since it uses less digits than its factorization.

64060320636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 64060320636 in words is "sixty-four billion, sixty million, three hundred twenty thousand, six hundred thirty-six".