108746737921 has 4 divisors (see below), whose sum is σ = 108747706032. Its totient is φ = 108745769812.

The previous prime is 108746737919. The next prime is 108746737961. The reversal of 108746737921 is 129737647801.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 108746737921 - 2¹ = 108746737919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108746737961) 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, 289495 + ... + 548908.

It is an arithmetic number, because the mean of its divisors is an integer number (27186926508).

Almost surely, 2^108746737921 is an apocalyptic number.

It is an amenable number.

108746737921 is a deficient number, since it is larger than the sum of its proper divisors (968111).

108746737921 is an equidigital number, since it uses as much as digits as its factorization.

108746737921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968110.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 108746737921 in words is "one hundred eight billion, seven hundred forty-six million, seven hundred thirty-seven thousand, nine hundred twenty-one".