11408162481 has 9 divisors (see below), whose sum is σ = 16478919769. Its totient is φ = 7605228036.

The previous prime is 11408162473. The next prime is 11408162539. The reversal of 11408162481 is 18426180411.

The square root of 11408162481 is 106809.

It is a perfect power (a square), and thus also a powerful number.

11408162481 is a `hidden beast` number, since 1 + 1 + 40 + 81 + 62 + 481 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 11408162481 - 2³ = 11408162473 is a prime.

It is a super-2 number, since 2×11408162481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11408162411) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 302626 + ... + 338228.

Almost surely, 2^11408162481 is an apocalyptic number.

11408162481 is the 106809-th square number.

11408162481 is the 53405-th centered octagonal number.

It is an amenable number.

11408162481 is a deficient number, since it is larger than the sum of its proper divisors (5070757288).

11408162481 is an frugal number, since it uses more digits than its factorization.

11408162481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71212 (or 35606 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

Multiplying 11408162481 by its sum of digits (36), we get a square (410693849316 = 640854²).

It can be divided in two parts, 11408 and 162481, that added together give a square (173889 = 417²).

The spelling of 11408162481 in words is "eleven billion, four hundred eight million, one hundred sixty-two thousand, four hundred eighty-one".