108408515387481 has 9 divisors (see below), whose sum is σ = 156590122900341. Its totient is φ = 72272322767772.

The previous prime is 108408515387479. The next prime is 108408515387509. The reversal of 108408515387481 is 184783515804801.

The square root of 108408515387481 is 10411941.

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

108408515387481 is a `hidden beast` number, since 1 + 0 + 8 + 4 + 0 + 8 + 51 + 538 + 7 + 48 + 1 = 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 108408515387481 - 2¹ = 108408515387479 is a prime.

It is a super-2 number, since 2×108408515387481² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108408515387461) 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, 29500500 + ... + 32971146.

Almost surely, 2^{108408515387481} is an apocalyptic number.

108408515387481 is the 10411941-st square number.

108408515387481 is the 5205971-st centered octagonal number.

It is an amenable number.

108408515387481 is a deficient number, since it is larger than the sum of its proper divisors (48181607512860).

108408515387481 is an frugal number, since it uses more digits than its factorization.

108408515387481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941300 (or 3470650 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 63.

The spelling of 108408515387481 in words is "one hundred eight trillion, four hundred eight billion, five hundred fifteen million, three hundred eighty-seven thousand, four hundred eighty-one".