116137978 has 12 divisors (see below), whose sum is σ = 191484090. Its totient is φ = 52789880.

The previous prime is 116137949. The next prime is 116137991. The reversal of 116137978 is 879731611.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 103978809 + 12159169 = 10197^2 + 3487^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239713 + ... + 240196.

Almost surely, 2^116137978 is an apocalyptic number.

116137978 is a deficient number, since it is larger than the sum of its proper divisors (75346112).

116137978 is a wasteful number, since it uses less digits than its factorization.

116137978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479933 (or 479922 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 116137978 is about 10776.7331784730. The cubic root of 116137978 is about 487.8931868931.

It can be divided in two parts, 11613 and 7978, that added together give a palindrome (19591).

The spelling of 116137978 in words is "one hundred sixteen million, one hundred thirty-seven thousand, nine hundred seventy-eight".