30118731636 has 96 divisors (see below), whose sum is σ = 82357230592. Its totient is φ = 8389370880.

The previous prime is 30118731613. The next prime is 30118731641. The reversal of 30118731636 is 63613781103.

It is a super-2 number, since 2×30118731636² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30118731594 and 30118731603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518331 + ... + 573501.

Almost surely, 2^30118731636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30118731636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41178615296).

30118731636 is an abundant number, since it is smaller than the sum of its proper divisors (52238498956).

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

30118731636 is a wasteful number, since it uses less digits than its factorization.

30118731636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55349 (or 55347 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 30118731636 in words is "thirty billion, one hundred eighteen million, seven hundred thirty-one thousand, six hundred thirty-six".