64203425136 has 120 divisors (see below), whose sum is σ = 182965997760. Its totient is φ = 21012825600.

The previous prime is 64203425129. The next prime is 64203425137. The reversal of 64203425136 is 63152430246.

64203425136 is a `hidden beast` number, since 642 + 0 + 3 + 4 + 2 + 5 + 1 + 3 + 6 = 666.

64203425136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64203425136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64203425137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2043466 + ... + 2074646.

It is an arithmetic number, because the mean of its divisors is an integer number (1524716648).

Almost surely, 2^64203425136 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 64203425136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91482998880).

64203425136 is an abundant number, since it is smaller than the sum of its proper divisors (118762572624).

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

64203425136 is a wasteful number, since it uses less digits than its factorization.

64203425136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31455 (or 31446 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 64203425136 in words is "sixty-four billion, two hundred three million, four hundred twenty-five thousand, one hundred thirty-six".