1161857204358 has 16 divisors (see below), whose sum is σ = 2323914919920. Its totient is φ = 387252316256.

The previous prime is 1161857204353. The next prime is 1161857204371. The reversal of 1161857204358 is 8534027581611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161857204358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161857204353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8279253 + ... + 8418416.

It is an arithmetic number, because the mean of its divisors is an integer number (145244682495).

Almost surely, 2^{1161857204358} is an apocalyptic number.

1161857204358 is an abundant number, since it is smaller than the sum of its proper divisors (1162057715562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161857204358 is a wasteful number, since it uses less digits than its factorization.

1161857204358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16709271.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 1161857204358 in words is "one trillion, one hundred sixty-one billion, eight hundred fifty-seven million, two hundred four thousand, three hundred fifty-eight".