1957008964565 has 16 divisors (see below), whose sum is σ = 2405771395776. Its totient is φ = 1527369360000.

The previous prime is 1957008964517. The next prime is 1957008964571. The reversal of 1957008964565 is 5654698007591.

It is not a de Polignac number, because 1957008964565 - 2³⁰ = 1955935222741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6503690 + ... + 6797940.

It is an arithmetic number, because the mean of its divisors is an integer number (150360712236).

Almost surely, 2^{1957008964565} is an apocalyptic number.

It is an amenable number.

1957008964565 is a deficient number, since it is larger than the sum of its proper divisors (448762431211).

1957008964565 is a wasteful number, since it uses less digits than its factorization.

1957008964565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326740.

The product of its (nonzero) digits is 81648000, while the sum is 65.

The spelling of 1957008964565 in words is "one trillion, nine hundred fifty-seven billion, eight million, nine hundred sixty-four thousand, five hundred sixty-five".