64999415052 has 144 divisors (see below), whose sum is σ = 201421479168. Its totient is φ = 17391116160.

The previous prime is 64999415011. The next prime is 64999415057. The reversal of 64999415052 is 25051499946.

64999415052 is a `hidden beast` number, since 6 + 4 + 9 + 99 + 41 + 505 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64999415052.

It is not an unprimeable number, because it can be changed into a prime (64999415057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156078 + ... + 392885.

It is an arithmetic number, because the mean of its divisors is an integer number (1398760272).

Almost surely, 2^64999415052 is an apocalyptic number.

It is an amenable number.

64999415052 is an abundant number, since it is smaller than the sum of its proper divisors (136422064116).

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

64999415052 is a wasteful number, since it uses less digits than its factorization.

64999415052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549020 (or 549015 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 64999415052 in words is "sixty-four billion, nine hundred ninety-nine million, four hundred fifteen thousand, fifty-two".