64929377573 has 2 divisors, whose sum is σ = 64929377574. Its totient is φ = 64929377572.

The previous prime is 64929377561. The next prime is 64929377627. The reversal of 64929377573 is 37577392946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61029749764 + 3899627809 = 247042^2 + 62447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64929377573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64929377543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32464688786 + 32464688787.

It is an arithmetic number, because the mean of its divisors is an integer number (32464688787).

Almost surely, 2^64929377573 is an apocalyptic number.

It is an amenable number.

64929377573 is a deficient number, since it is larger than the sum of its proper divisors (1).

64929377573 is an equidigital number, since it uses as much as digits as its factorization.

64929377573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60011280, while the sum is 62.

The spelling of 64929377573 in words is "sixty-four billion, nine hundred twenty-nine million, three hundred seventy-seven thousand, five hundred seventy-three".