646115323560501 has 48 divisors (see below), whose sum is σ = 1005192202636800. Its totient is φ = 367369918578432.

The previous prime is 646115323560481. The next prime is 646115323560523. The reversal of 646115323560501 is 105065323511646.

It is not a de Polignac number, because 646115323560501 - 2³³ = 646106733625909 is a prime.

It is a super-2 number, since 2×646115323560501² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646115323565501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 852288231 + ... + 853045988.

It is an arithmetic number, because the mean of its divisors is an integer number (20941504221600).

Almost surely, 2^{646115323560501} is an apocalyptic number.

It is an amenable number.

646115323560501 is a deficient number, since it is larger than the sum of its proper divisors (359076879076299).

646115323560501 is a wasteful number, since it uses less digits than its factorization.

646115323560501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705334298 (or 1705334281 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 646115323560501 in words is "six hundred forty-six trillion, one hundred fifteen billion, three hundred twenty-three million, five hundred sixty thousand, five hundred one".