72222142860 has 384 divisors, whose sum is σ = 261144576000. Its totient is φ = 16229880576.

The previous prime is 72222142843. The next prime is 72222142913. The reversal of 72222142860 is 6824122227.

72222142860 is a `hidden beast` number, since 7 + 2 + 2 + 221 + 428 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 109593211 + ... + 109593869.

It is an arithmetic number, because the mean of its divisors is an integer number (680064000).

Almost surely, 2^72222142860 is an apocalyptic number.

72222142860 is a gapful number since it is divisible by the number (70) 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 72222142860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130572288000).

72222142860 is an abundant number, since it is smaller than the sum of its proper divisors (188922433140).

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

72222142860 is a wasteful number, since it uses less digits than its factorization.

72222142860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 72222142860 in words is "seventy-two billion, two hundred twenty-two million, one hundred forty-two thousand, eight hundred sixty".