64880979441 has 16 divisors (see below), whose sum is σ = 89514406080. Its totient is φ = 41773374720.

The previous prime is 64880979431. The next prime is 64880979479. The reversal of 64880979441 is 14497908846.

It is not a de Polignac number, because 64880979441 - 2⁶ = 64880979377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64880979431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2814100 + ... + 2837061.

It is an arithmetic number, because the mean of its divisors is an integer number (5594650380).

Almost surely, 2^64880979441 is an apocalyptic number.

It is an amenable number.

64880979441 is a deficient number, since it is larger than the sum of its proper divisors (24633426639).

64880979441 is a wasteful number, since it uses less digits than its factorization.

64880979441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651296.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 64880979441 in words is "sixty-four billion, eight hundred eighty million, nine hundred seventy-nine thousand, four hundred forty-one".