109925291538 has 16 divisors (see below), whose sum is σ = 244278425760. Its totient is φ = 36641763828.

The previous prime is 109925291501. The next prime is 109925291587. The reversal of 109925291538 is 835192529901.

It is a happy number.

109925291538 is a `hidden beast` number, since 10 + 9 + 9 + 2 + 5 + 2 + 91 + 538 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2035653547 = 109925291538 / (1 + 0 + 9 + 9 + 2 + 5 + 2 + 9 + 1 + 5 + 3 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017826720 + ... + 1017826827.

It is an arithmetic number, because the mean of its divisors is an integer number (15267401610).

Almost surely, 2^109925291538 is an apocalyptic number.

109925291538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109925291538 is an abundant number, since it is smaller than the sum of its proper divisors (134353134222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109925291538 is a wasteful number, since it uses less digits than its factorization.

109925291538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035653558 (or 2035653552 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 109925291538 in words is "one hundred nine billion, nine hundred twenty-five million, two hundred ninety-one thousand, five hundred thirty-eight".