108779253489 has 81 divisors (see below), whose sum is σ = 173644670433. Its totient is φ = 65604559104.

The previous prime is 108779253481. The next prime is 108779253509. The reversal of 108779253489 is 984352977801.

The square root of 108779253489 is 329817.

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

108779253489 is a `hidden beast` number, since 1 + 0 + 8 + 7 + 7 + 92 + 534 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10752653025 + 98026600464 = 103695^2 + 313092^2 .

It is not a de Polignac number, because 108779253489 - 2³ = 108779253481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108779253481) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 487799232 + ... + 487799454.

Almost surely, 2^108779253489 is an apocalyptic number.

108779253489 is the 329817-th square number.

108779253489 is the 164909-th centered octagonal number.

It is an amenable number.

108779253489 is a deficient number, since it is larger than the sum of its proper divisors (64865416944).

108779253489 is an equidigital number, since it uses as much as digits as its factorization.

108779253489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 108779253489 in words is "one hundred eight billion, seven hundred seventy-nine million, two hundred fifty-three thousand, four hundred eighty-nine".