915349984220 has 48 divisors (see below), whose sum is σ = 2203358888640. Its totient is φ = 312903005184.

The previous prime is 915349984181. The next prime is 915349984243. The reversal of 915349984220 is 22489943519.

It is a super-2 number, since 2×915349984220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9653435 + ... + 9747794.

It is an arithmetic number, because the mean of its divisors is an integer number (45903310180).

Almost surely, 2^915349984220 is an apocalyptic number.

It is an amenable number.

915349984220 is an abundant number, since it is smaller than the sum of its proper divisors (1288008904420).

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

915349984220 is a wasteful number, since it uses less digits than its factorization.

915349984220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19401582 (or 19401580 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 915349984220 in words is "nine hundred fifteen billion, three hundred forty-nine million, nine hundred eighty-four thousand, two hundred twenty".