109971372129 has 16 divisors (see below), whose sum is σ = 146865488640. Its totient is φ = 73195850880.

The previous prime is 109971372103. The next prime is 109971372151. The reversal of 109971372129 is 921273179901.

It is not a de Polignac number, because 109971372129 - 2⁷ = 109971372001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109971372229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4951752 + ... + 4973910.

It is an arithmetic number, because the mean of its divisors is an integer number (9179093040).

Almost surely, 2^109971372129 is an apocalyptic number.

It is an amenable number.

109971372129 is a deficient number, since it is larger than the sum of its proper divisors (36894116511).

109971372129 is a wasteful number, since it uses less digits than its factorization.

109971372129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24760.

The product of its (nonzero) digits is 428652, while the sum is 51.

The spelling of 109971372129 in words is "one hundred nine billion, nine hundred seventy-one million, three hundred seventy-two thousand, one hundred twenty-nine".