109801942872 has 64 divisors (see below), whose sum is σ = 291363285600. Its totient is φ = 34363392000.

The previous prime is 109801942853. The next prime is 109801942879. The reversal of 109801942872 is 278249108901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109801942879) 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, 162129 + ... + 495872.

Almost surely, 2^109801942872 is an apocalyptic number.

109801942872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

109801942872 is an abundant number, since it is smaller than the sum of its proper divisors (181561342728).

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

109801942872 is a wasteful number, since it uses less digits than its factorization.

109801942872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658436 (or 658432 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 109801942872 in words is "one hundred nine billion, eight hundred one million, nine hundred forty-two thousand, eight hundred seventy-two".