11615047488 has 210 divisors, whose sum is σ = 37847292098. Its totient is φ = 3519521280.

The previous prime is 11615047487. The next prime is 11615047489. The reversal of 11615047488 is 88474051611.

11615047488 is a `hidden beast` number, since 1 + 1 + 61 + 504 + 7 + 4 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (11615047487) and next prime (11615047489).

It can be written as a sum of positive squares in only one way, i.e., 8882685504 + 2732361984 = 94248^2 + 52272^2 .

It is a super-2 number, since 2×11615047488² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11615047487) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 618006 + ... + 636522.

Almost surely, 2^11615047488 is an apocalyptic number.

11615047488 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 11615047488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18923646049).

11615047488 is an abundant number, since it is smaller than the sum of its proper divisors (26232244610).

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

11615047488 is a wasteful number, since it uses less digits than its factorization.

11615047488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18563 (or 18533 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 11615047488 in words is "eleven billion, six hundred fifteen million, forty-seven thousand, four hundred eighty-eight".