1157361643685 has 16 divisors (see below), whose sum is σ = 1523887498224. Its totient is φ = 838541263872.

The previous prime is 1157361643673. The next prime is 1157361643721. The reversal of 1157361643685 is 5863461637511.

It can be written as a sum of positive squares in 8 ways, for example, as 13330318849 + 1144031324836 = 115457^2 + 1069594^2 .

It is not a de Polignac number, because 1157361643685 - 2⁶ = 1157361643621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1157361643685.

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, 167973572 + ... + 167980461.

It is an arithmetic number, because the mean of its divisors is an integer number (95242968639).

Almost surely, 2^{1157361643685} is an apocalyptic number.

It is an amenable number.

1157361643685 is a deficient number, since it is larger than the sum of its proper divisors (366525854539).

1157361643685 is a wasteful number, since it uses less digits than its factorization.

1157361643685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335954104.

The product of its digits is 10886400, while the sum is 56.

The spelling of 1157361643685 in words is "one trillion, one hundred fifty-seven billion, three hundred sixty-one million, six hundred forty-three thousand, six hundred eighty-five".