109959781320 has 96 divisors (see below), whose sum is σ = 368897368320. Its totient is φ = 28376714880.

The previous prime is 109959781303. The next prime is 109959781343. The reversal of 109959781320 is 23187959901.

109959781320 is a `hidden beast` number, since 10 + 9 + 9 + 597 + 8 + 1 + 32 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4915354 + ... + 4937673.

It is an arithmetic number, because the mean of its divisors is an integer number (3842680920).

Almost surely, 2^109959781320 is an apocalyptic number.

109959781320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109959781320 is an abundant number, since it is smaller than the sum of its proper divisors (258937587000).

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

109959781320 is a wasteful number, since it uses less digits than its factorization.

109959781320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853075 (or 9853068 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 109959781320 in words is "one hundred nine billion, nine hundred fifty-nine million, seven hundred eighty-one thousand, three hundred twenty".