129371894248 has 16 divisors (see below), whose sum is σ = 243135120960. Its totient is φ = 64535862000.

The previous prime is 129371894237. The next prime is 129371894251. The reversal of 129371894248 is 842498173921.

It is a junction number, because it is equal to n+sod(n) for n = 129371894192 and 129371894201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18756978 + ... + 18763873.

It is an arithmetic number, because the mean of its divisors is an integer number (15195945060).

Almost surely, 2^129371894248 is an apocalyptic number.

It is an amenable number.

129371894248 is a deficient number, since it is larger than the sum of its proper divisors (113763226712).

129371894248 is a wasteful number, since it uses less digits than its factorization.

129371894248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37521288 (or 37521284 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The spelling of 129371894248 in words is "one hundred twenty-nine billion, three hundred seventy-one million, eight hundred ninety-four thousand, two hundred forty-eight".