72221507862 has 16 divisors (see below), whose sum is σ = 165077732352. Its totient is φ = 20634716520.

The previous prime is 72221507843. The next prime is 72221507887. The reversal of 72221507862 is 26870512227.

It is a super-2 number, since 2×72221507862² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1719559711 = 72221507862 / (7 + 2 + 2 + 2 + 1 + 5 + 0 + 7 + 8 + 6 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859779814 + ... + 859779897.

It is an arithmetic number, because the mean of its divisors is an integer number (10317358272).

Almost surely, 2^72221507862 is an apocalyptic number.

72221507862 is an abundant number, since it is smaller than the sum of its proper divisors (92856224490).

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

72221507862 is a wasteful number, since it uses less digits than its factorization.

72221507862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719559723.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 72221507862 in words is "seventy-two billion, two hundred twenty-one million, five hundred seven thousand, eight hundred sixty-two".