64554864192 has 840 divisors, whose sum is σ = 243246209976. Its totient is φ = 16777248768.

The previous prime is 64554864181. The next prime is 64554864211. The reversal of 64554864192 is 29146845546.

It is a happy number.

64554864192 is a `hidden beast` number, since 6 + 4 + 5 + 548 + 6 + 4 + 1 + 92 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 796594176 + 63758270016 = 28224^2 + 252504^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 373149418 + ... + 373149590.

Almost surely, 2^64554864192 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 64554864192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121623104988).

64554864192 is an abundant number, since it is smaller than the sum of its proper divisors (178691345784).

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

64554864192 is a wasteful number, since it uses less digits than its factorization.

64554864192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 311 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 64554864192 in words is "sixty-four billion, five hundred fifty-four million, eight hundred sixty-four thousand, one hundred ninety-two".