64554315765 has 32 divisors (see below), whose sum is σ = 104839888896. Its totient is φ = 33912217920.

The previous prime is 64554315757. The next prime is 64554315823. The reversal of 64554315765 is 56751345546.

It is a happy number.

It is not a de Polignac number, because 64554315765 - 2³ = 64554315757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129774 + ... + 1185536.

It is an arithmetic number, because the mean of its divisors is an integer number (3276246528).

Almost surely, 2^64554315765 is an apocalyptic number.

It is an amenable number.

64554315765 is a deficient number, since it is larger than the sum of its proper divisors (40285573131).

64554315765 is a wasteful number, since it uses less digits than its factorization.

64554315765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56929.

The product of its digits is 7560000, while the sum is 51.

The spelling of 64554315765 in words is "sixty-four billion, five hundred fifty-four million, three hundred fifteen thousand, seven hundred sixty-five".