72223736261620 has 48 divisors (see below), whose sum is σ = 156457076606208. Its totient is φ = 27991778348160.

The previous prime is 72223736261617. The next prime is 72223736261783. The reversal of 72223736261620 is 2616263732227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441707692 + ... + 441871171.

It is an arithmetic number, because the mean of its divisors is an integer number (3259522429296).

Almost surely, 2^{72223736261620} is an apocalyptic number.

It is an amenable number.

72223736261620 is an abundant number, since it is smaller than the sum of its proper divisors (84233340344588).

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

72223736261620 is a wasteful number, since it uses less digits than its factorization.

72223736261620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883579000 (or 883578998 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 49.

Adding to 72223736261620 its reverse (2616263732227), we get a palindrome (74839999993847).

The spelling of 72223736261620 in words is "seventy-two trillion, two hundred twenty-three billion, seven hundred thirty-six million, two hundred sixty-one thousand, six hundred twenty".