22071878352 has 160 divisors (see below), whose sum is σ = 67039260800. Its totient is φ = 6933454848.

The previous prime is 22071878329. The next prime is 22071878393. The reversal of 22071878352 is 25387817022.

22071878352 is a `hidden beast` number, since 220 + 7 + 1 + 8 + 78 + 352 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 22071878298 and 22071878307.

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, 1577178 + ... + 1591110.

It is an arithmetic number, because the mean of its divisors is an integer number (418995380).

Almost surely, 2^22071878352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22071878352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33519630400).

22071878352 is an abundant number, since it is smaller than the sum of its proper divisors (44967382448).

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

22071878352 is a wasteful number, since it uses less digits than its factorization.

22071878352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14162 (or 14150 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 22071878352 in words is "twenty-two billion, seventy-one million, eight hundred seventy-eight thousand, three hundred fifty-two".