116511561561550 has 24 divisors (see below), whose sum is σ = 216721340537976. Its totient is φ = 46602509348640.

The previous prime is 116511561561511. The next prime is 116511561561589. The reversal of 116511561561550 is 55165165115611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (116511561561511) and next prime (116511561561589).

It is a junction number, because it is equal to n+sod(n) for n = 116511561561494 and 116511561561503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51769032 + ... + 53972731.

It is an arithmetic number, because the mean of its divisors is an integer number (9030055855749).

Almost surely, 2^{116511561561550} is an apocalyptic number.

116511561561550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

116511561561550 is a deficient number, since it is larger than the sum of its proper divisors (100209778976426).

116511561561550 is a wasteful number, since it uses less digits than its factorization.

116511561561550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105763812 (or 105763807 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 49.

The spelling of 116511561561550 in words is "one hundred sixteen trillion, five hundred eleven billion, five hundred sixty-one million, five hundred sixty-one thousand, five hundred fifty".