64899737352 has 64 divisors (see below), whose sum is σ = 180386193600. Its totient is φ = 21620148480.

The previous prime is 64899737323. The next prime is 64899737359. The reversal of 64899737352 is 25373799846.

64899737352 is a `hidden beast` number, since 6 + 489 + 97 + 37 + 35 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64899737352.

It is not an unprimeable number, because it can be changed into a prime (64899737359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269952 + ... + 450192.

It is an arithmetic number, because the mean of its divisors is an integer number (2818534275).

Almost surely, 2^64899737352 is an apocalyptic number.

It is an amenable number.

64899737352 is an abundant number, since it is smaller than the sum of its proper divisors (115486456248).

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

64899737352 is a wasteful number, since it uses less digits than its factorization.

64899737352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181923 (or 181913 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 64899737352 in words is "sixty-four billion, eight hundred ninety-nine million, seven hundred thirty-seven thousand, three hundred fifty-two".