118571136978 has 32 divisors (see below), whose sum is σ = 276550761600. Its totient is φ = 33877467120.

The previous prime is 118571136977. The next prime is 118571137001. The reversal of 118571136978 is 879631175811.

It is a super-2 number, since 2×118571136978² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118571136977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28805313 + ... + 28809428.

It is an arithmetic number, because the mean of its divisors is an integer number (8642211300).

Almost surely, 2^118571136978 is an apocalyptic number.

118571136978 is an abundant number, since it is smaller than the sum of its proper divisors (157979624622).

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

118571136978 is an equidigital number, since it uses as much as digits as its factorization.

118571136978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57614767 (or 57614753 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 57.

The spelling of 118571136978 in words is "one hundred eighteen billion, five hundred seventy-one million, one hundred thirty-six thousand, nine hundred seventy-eight".