108440265387 has 18 divisors (see below), whose sum is σ = 149425936956. Its totient is φ = 69950054160.

The previous prime is 108440265359. The next prime is 108440265389. The reversal of 108440265387 is 783562044801.

It is not a de Polignac number, because 108440265387 - 2¹⁴ = 108440249003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108440265389) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17678373 + ... + 17684505.

It is an arithmetic number, because the mean of its divisors is an integer number (8301440942).

Almost surely, 2^108440265387 is an apocalyptic number.

108440265387 is a deficient number, since it is larger than the sum of its proper divisors (40985671569).

108440265387 is an frugal number, since it uses more digits than its factorization.

108440265387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12331 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

Multiplying 108440265387 by its sum of digits (48), we get a square (5205132738576 = 2281476²).

The spelling of 108440265387 in words is "one hundred eight billion, four hundred forty million, two hundred sixty-five thousand, three hundred eighty-seven".