1997713753057 has 12 divisors (see below), whose sum is σ = 2195877371940. Its totient is φ = 1816067644160.

The previous prime is 1997713752959. The next prime is 1997713753067. The reversal of 1997713753057 is 7503573177991.

It can be written as a sum of positive squares in 2 ways, for example, as 1733814761536 + 263898991521 = 1316744^2 + 513711^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1997713753057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1997713753057.

It is not an unprimeable number, because it can be changed into a prime (1997713753067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7488153 + ... + 7750345.

It is an arithmetic number, because the mean of its divisors is an integer number (182989780995).

Almost surely, 2^{1997713753057} is an apocalyptic number.

It is an amenable number.

1997713753057 is a deficient number, since it is larger than the sum of its proper divisors (198163618883).

1997713753057 is a wasteful number, since it uses less digits than its factorization.

1997713753057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325184 (or 325173 counting only the distinct ones).

The product of its (nonzero) digits is 43758225, while the sum is 64.

The spelling of 1997713753057 in words is "one trillion, nine hundred ninety-seven billion, seven hundred thirteen million, seven hundred fifty-three thousand, fifty-seven".