64384572651 has 32 divisors (see below), whose sum is σ = 104455024128. Its totient is φ = 34435653120.

The previous prime is 64384572641. The next prime is 64384572667. The reversal of 64384572651 is 15627548346.

It is not a de Polignac number, because 64384572651 - 2⁶ = 64384572587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 64384572594 and 64384572603.

It is not an unprimeable number, because it can be changed into a prime (64384572641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 433585 + ... + 562818.

It is an arithmetic number, because the mean of its divisors is an integer number (3264219504).

Almost surely, 2^64384572651 is an apocalyptic number.

64384572651 is a deficient number, since it is larger than the sum of its proper divisors (40070451477).

64384572651 is a wasteful number, since it uses less digits than its factorization.

64384572651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996611.

The product of its digits is 4838400, while the sum is 51.

The spelling of 64384572651 in words is "sixty-four billion, three hundred eighty-four million, five hundred seventy-two thousand, six hundred fifty-one".