1157165618105 has 24 divisors (see below), whose sum is σ = 1606320808512. Its totient is φ = 783924771744.

The previous prime is 1157165618093. The next prime is 1157165618131. The reversal of 1157165618105 is 5018165617511.

It is not a de Polignac number, because 1157165618105 - 2¹² = 1157165614009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1157165618105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2158499 + ... + 2640728.

It is an arithmetic number, because the mean of its divisors is an integer number (66930033688).

Almost surely, 2^{1157165618105} is an apocalyptic number.

It is an amenable number.

1157165618105 is a deficient number, since it is larger than the sum of its proper divisors (449155190407).

1157165618105 is an frugal number, since it uses more digits than its factorization.

1157165618105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799405 (or 4799322 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 47.

The spelling of 1157165618105 in words is "one trillion, one hundred fifty-seven billion, one hundred sixty-five million, six hundred eighteen thousand, one hundred five".