215915118048 has 768 divisors, whose sum is σ = 766402560000. Its totient is φ = 57849292800.

The previous prime is 215915118037. The next prime is 215915118061. The reversal of 215915118048 is 840811519512.

215915118048 is a `hidden beast` number, since 2 + 1 + 5 + 91 + 511 + 8 + 0 + 48 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 215915117994 and 215915118012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1449094678 + ... + 1449094826.

It is an arithmetic number, because the mean of its divisors is an integer number (997920000).

Almost surely, 2^215915118048 is an apocalyptic number.

215915118048 is a gapful number since it is divisible by the number (28) 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 215915118048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383201280000).

215915118048 is an abundant number, since it is smaller than the sum of its proper divisors (550487441952).

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

215915118048 is a wasteful number, since it uses less digits than its factorization.

215915118048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The spelling of 215915118048 in words is "two hundred fifteen billion, nine hundred fifteen million, one hundred eighteen thousand, forty-eight".