3815645465657 has 16 divisors (see below), whose sum is σ = 3838016440320. Its totient is φ = 3793341196800.

The previous prime is 3815645465557. The next prime is 3815645465683. The reversal of 3815645465657 is 7565645465183.

It is a cyclic number.

It is not a de Polignac number, because 3815645465657 - 2²² = 3815641271353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3815645465593 and 3815645465602.

It is not an unprimeable number, because it can be changed into a prime (3815645465557) 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, 658889432 + ... + 658895222.

It is an arithmetic number, because the mean of its divisors is an integer number (239876027520).

Almost surely, 2^{3815645465657} is an apocalyptic number.

It is an amenable number.

3815645465657 is a deficient number, since it is larger than the sum of its proper divisors (22370974663).

3815645465657 is a wasteful number, since it uses less digits than its factorization.

3815645465657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10904.

The product of its digits is 362880000, while the sum is 65.

The spelling of 3815645465657 in words is "three trillion, eight hundred fifteen billion, six hundred forty-five million, four hundred sixty-five thousand, six hundred fifty-seven".