72922245660 has 288 divisors, whose sum is σ = 253024611840. Its totient is φ = 16827148800.

The previous prime is 72922245647. The next prime is 72922245677. The reversal of 72922245660 is 6654222927.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9605146 + ... + 9612734.

It is an arithmetic number, because the mean of its divisors is an integer number (878557680).

Almost surely, 2^72922245660 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 72922245660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126512305920).

72922245660 is an abundant number, since it is smaller than the sum of its proper divisors (180102366180).

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

72922245660 is a wasteful number, since it uses less digits than its factorization.

72922245660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849 (or 7844 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 72922245660 in words is "seventy-two billion, nine hundred twenty-two million, two hundred forty-five thousand, six hundred sixty".