915398421168 has 1440 divisors, whose sum is σ = 3388369797120. Its totient is φ = 211239705600.

The previous prime is 915398421151. The next prime is 915398421241. The reversal of 915398421168 is 861124893519.

It is a happy number.

It is a super-2 number, since 2×915398421168² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

Its product of digits (3732480) is a multiple of the sum of its prime divisors (243).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 7207861521 + ... + 7207861647.

Almost surely, 2^915398421168 is an apocalyptic number.

915398421168 is a gapful number since it is divisible by the number (98) 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 915398421168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694184898560).

915398421168 is an abundant number, since it is smaller than the sum of its proper divisors (2472971375952).

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

915398421168 is a wasteful number, since it uses less digits than its factorization.

915398421168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 243 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The spelling of 915398421168 in words is "nine hundred fifteen billion, three hundred ninety-eight million, four hundred twenty-one thousand, one hundred sixty-eight".