107981917155 has 128 divisors (see below), whose sum is σ = 224877312000. Its totient is φ = 49140919296.

The previous prime is 107981917133. The next prime is 107981917157. The reversal of 107981917155 is 551719189701.

It is not a de Polignac number, because 107981917155 - 2¹⁰ = 107981916131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (107981917157) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10506099 + ... + 10516371.

It is an arithmetic number, because the mean of its divisors is an integer number (1756854000).

Almost surely, 2^107981917155 is an apocalyptic number.

107981917155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

107981917155 is an abundant number, since it is smaller than the sum of its proper divisors (116895394845).

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

107981917155 is a wasteful number, since it uses less digits than its factorization.

107981917155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535 (or 10515 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 54.

The spelling of 107981917155 in words is "one hundred seven billion, nine hundred eighty-one million, nine hundred seventeen thousand, one hundred fifty-five".