15465160881 has 9 divisors (see below), whose sum is σ = 22339104619. Its totient is φ = 10309858536.

The previous prime is 15465160871. The next prime is 15465160897. The reversal of 15465160881 is 18806156451.

The square root of 15465160881 is 124359.

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

15465160881 is a `hidden beast` number, since 1 + 54 + 6 + 516 + 0 + 8 + 81 = 666.

15465160881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1228853025 + 14236307856 = 35055^2 + 119316^2 .

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

It is not a de Polignac number, because 15465160881 - 2⁹ = 15465160369 is a prime.

It is a super-2 number, since 2×15465160881² (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 (15465160871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 352351 + ... + 393803.

Almost surely, 2^15465160881 is an apocalyptic number.

15465160881 is the 124359-th square number.

15465160881 is the 62180-th centered octagonal number.

It is an amenable number.

15465160881 is a deficient number, since it is larger than the sum of its proper divisors (6873943738).

15465160881 is an frugal number, since it uses more digits than its factorization.

15465160881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82912 (or 41456 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 15465160881 in words is "fifteen billion, four hundred sixty-five million, one hundred sixty thousand, eight hundred eighty-one".