1957197865975 has 48 divisors (see below), whose sum is σ = 2689818912000. Its totient is φ = 1412547708000.

The previous prime is 1957197865969. The next prime is 1957197865991. The reversal of 1957197865975 is 5795687917591.

It is a de Polignac number, because none of the positive numbers 2^k-1957197865975 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1957197865895 and 1957197865904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4134526 + ... + 4583524.

It is an arithmetic number, because the mean of its divisors is an integer number (56037894000).

Almost surely, 2^{1957197865975} is an apocalyptic number.

1957197865975 is a deficient number, since it is larger than the sum of its proper divisors (732621046025).

1957197865975 is a wasteful number, since it uses less digits than its factorization.

1957197865975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449173 (or 449146 counting only the distinct ones).

The product of its digits is 1500282000, while the sum is 79.

The spelling of 1957197865975 in words is "one trillion, nine hundred fifty-seven billion, one hundred ninety-seven million, eight hundred sixty-five thousand, nine hundred seventy-five".