13613992488 has 128 divisors (see below), whose sum is σ = 39320064000. Its totient is φ = 4359718080.

The previous prime is 13613992487. The next prime is 13613992489. The reversal of 13613992488 is 88429931631.

13613992488 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 399 + 248 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (13613992487) and next prime (13613992489).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13613992481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 923431 + ... + 938057.

It is an arithmetic number, because the mean of its divisors is an integer number (307188000).

Almost surely, 2^13613992488 is an apocalyptic number.

13613992488 is a gapful number since it is divisible by the number (18) 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 13613992488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19660032000).

13613992488 is an abundant number, since it is smaller than the sum of its proper divisors (25706071512).

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

13613992488 is a wasteful number, since it uses less digits than its factorization.

13613992488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14812 (or 14802 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 13613992488 in words is "thirteen billion, six hundred thirteen million, nine hundred ninety-two thousand, four hundred eighty-eight".