1161552057237 has 24 divisors (see below), whose sum is σ = 1971118644768. Its totient is φ = 649819332000.

The previous prime is 1161552057209. The next prime is 1161552057247. The reversal of 1161552057237 is 7327502551611.

1161552057237 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 55 + 20 + 572 + 3 + 7 = 666.

It is not a de Polignac number, because 1161552057237 - 2⁶ = 1161552057173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1161552057192 and 1161552057201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161552057247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 451262139 + ... + 451264712.

It is an arithmetic number, because the mean of its divisors is an integer number (82129943532).

Almost surely, 2^{1161552057237} is an apocalyptic number.

It is an amenable number.

1161552057237 is a deficient number, since it is larger than the sum of its proper divisors (809566587531).

1161552057237 is a wasteful number, since it uses less digits than its factorization.

1161552057237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902526881 (or 902526878 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 1161552057237 in words is "one trillion, one hundred sixty-one billion, five hundred fifty-two million, fifty-seven thousand, two hundred thirty-seven".