842968397520 has 160 divisors (see below), whose sum is σ = 2906837879040. Its totient is φ = 224537633280.

The previous prime is 842968397471. The next prime is 842968397563. The reversal of 842968397520 is 25793869248.

842968397520 is a `hidden beast` number, since 8 + 4 + 29 + 6 + 83 + 9 + 7 + 520 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1695930 + ... + 2135910.

It is an arithmetic number, because the mean of its divisors is an integer number (18167736744).

Almost surely, 2^842968397520 is an apocalyptic number.

842968397520 is a gapful number since it is divisible by the number (80) 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 842968397520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453418939520).

842968397520 is an abundant number, since it is smaller than the sum of its proper divisors (2063869481520).

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

842968397520 is a wasteful number, since it uses less digits than its factorization.

842968397520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440890 (or 440878 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 842968397520 in words is "eight hundred forty-two billion, nine hundred sixty-eight million, three hundred ninety-seven thousand, five hundred twenty".