11360434581 has 6 divisors (see below), whose sum is σ = 16409516630. Its totient is φ = 7573623048.

The previous prime is 11360434573. The next prime is 11360434621. The reversal of 11360434581 is 18543406311.

11360434581 is a `hidden beast` number, since 1 + 1 + 3 + 604 + 3 + 45 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7453559556 + 3906875025 = 86334^2 + 62505^2 .

It is not a de Polignac number, because 11360434581 - 2³ = 11360434573 is a prime.

It is a super-2 number, since 2×11360434581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11360434511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 631135246 + ... + 631135263.

Almost surely, 2^11360434581 is an apocalyptic number.

It is an amenable number.

11360434581 is a deficient number, since it is larger than the sum of its proper divisors (5049082049).

11360434581 is a wasteful number, since it uses less digits than its factorization.

11360434581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262270515 (or 1262270512 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

It can be divided in two parts, 1136043 and 4581, that added together give a square (1140624 = 1068²).

The spelling of 11360434581 in words is "eleven billion, three hundred sixty million, four hundred thirty-four thousand, five hundred eighty-one".