116721507136 has 112 divisors (see below), whose sum is σ = 271248109776. Its totient is φ = 49331994624.

The previous prime is 116721507061. The next prime is 116721507169. The reversal of 116721507136 is 631705127611.

It can be written as a sum of positive squares in 8 ways, for example, as 1219406400 + 115502100736 = 34920^2 + 339856^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411810 + ... + 634846.

It is an arithmetic number, because the mean of its divisors is an integer number (2421858123).

Almost surely, 2^116721507136 is an apocalyptic number.

116721507136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 116721507136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135624054888).

116721507136 is an abundant number, since it is smaller than the sum of its proper divisors (154526602640).

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

116721507136 is a wasteful number, since it uses less digits than its factorization.

116721507136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223116 (or 223106 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 116721507136 in words is "one hundred sixteen billion, seven hundred twenty-one million, five hundred seven thousand, one hundred thirty-six".