18497617152 has 288 divisors, whose sum is σ = 59071272960. Its totient is φ = 5024194560.

The previous prime is 18497617147. The next prime is 18497617157. The reversal of 18497617152 is 25171679481.

It is an interprime number because it is at equal distance from previous prime (18497617147) and next prime (18497617157).

It is a super-2 number, since 2×18497617152² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18497617095 and 18497617104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18497617157) 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, 26089374 + ... + 26090082.

Almost surely, 2^18497617152 is an apocalyptic number.

18497617152 is a gapful number since it is divisible by the number (12) 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 18497617152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29535636480).

18497617152 is an abundant number, since it is smaller than the sum of its proper divisors (40573655808).

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

18497617152 is a wasteful number, since it uses less digits than its factorization.

18497617152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 955 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The spelling of 18497617152 in words is "eighteen billion, four hundred ninety-seven million, six hundred seventeen thousand, one hundred fifty-two".