64131200979 has 16 divisors (see below), whose sum is σ = 90890473248. Its totient is φ = 40082604032.

The previous prime is 64131200977. The next prime is 64131200981. The reversal of 64131200979 is 97900213146.

It is an interprime number because it is at equal distance from previous prime (64131200977) and next prime (64131200981).

It is a cyclic number.

It is not a de Polignac number, because 64131200979 - 2¹ = 64131200977 is a prime.

It is a super-2 number, since 2×64131200979² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64131200979.

It is not an unprimeable number, because it can be changed into a prime (64131200977) 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, 2433342 + ... + 2459555.

It is an arithmetic number, because the mean of its divisors is an integer number (5680654578).

Almost surely, 2^64131200979 is an apocalyptic number.

64131200979 is a deficient number, since it is larger than the sum of its proper divisors (26759272269).

64131200979 is a wasteful number, since it uses less digits than its factorization.

64131200979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893174.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 64131200979 in words is "sixty-four billion, one hundred thirty-one million, two hundred thousand, nine hundred seventy-nine".