108738557677 has 4 divisors (see below), whose sum is σ = 114461639680. Its totient is φ = 103015475676.

The previous prime is 108738557633. The next prime is 108738557693. The reversal of 108738557677 is 776755837801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776755837801 = 9883 ⋅78595147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108738557677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108738552677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2861540973 + ... + 2861541010.

It is an arithmetic number, because the mean of its divisors is an integer number (28615409920).

Almost surely, 2^108738557677 is an apocalyptic number.

It is an amenable number.

108738557677 is a deficient number, since it is larger than the sum of its proper divisors (5723082003).

108738557677 is an equidigital number, since it uses as much as digits as its factorization.

108738557677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723082002.

The product of its (nonzero) digits is 69148800, while the sum is 64.

The spelling of 108738557677 in words is "one hundred eight billion, seven hundred thirty-eight million, five hundred fifty-seven thousand, six hundred seventy-seven".