64971825009 has 32 divisors (see below), whose sum is σ = 106776843264. Its totient is φ = 34220577600.

The previous prime is 64971824989. The next prime is 64971825031. The reversal of 64971825009 is 90052817946.

It is not a de Polignac number, because 64971825009 - 2²¹ = 64969727857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64971825049) 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, 12234 + ... + 360684.

It is an arithmetic number, because the mean of its divisors is an integer number (3336776352).

Almost surely, 2^64971825009 is an apocalyptic number.

It is an amenable number.

64971825009 is a deficient number, since it is larger than the sum of its proper divisors (41805018255).

64971825009 is a wasteful number, since it uses less digits than its factorization.

64971825009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349157.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 64971825009 in words is "sixty-four billion, nine hundred seventy-one million, eight hundred twenty-five thousand, nine".