64596979773 has 12 divisors (see below), whose sum is σ = 93932970300. Its totient is φ = 42775627776.

The previous prime is 64596979753. The next prime is 64596979787. The reversal of 64596979773 is 37797969546.

64596979773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30016602009 + 34580377764 = 173253^2 + 185958^2 .

It is not a de Polignac number, because 64596979773 - 2¹³ = 64596971581 is a prime.

It is a super-2 number, since 2×64596979773² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64596979753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24084036 + ... + 24086717.

It is an arithmetic number, because the mean of its divisors is an integer number (7827747525).

Almost surely, 2^64596979773 is an apocalyptic number.

It is an amenable number.

64596979773 is a deficient number, since it is larger than the sum of its proper divisors (29335990527).

64596979773 is a wasteful number, since it uses less digits than its factorization.

64596979773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48170908 (or 48170905 counting only the distinct ones).

The product of its digits is 540101520, while the sum is 72.

The spelling of 64596979773 in words is "sixty-four billion, five hundred ninety-six million, nine hundred seventy-nine thousand, seven hundred seventy-three".