722156722560 has 1024 divisors, whose sum is σ = 3179728742400. Its totient is φ = 150825369600.

The previous prime is 722156722543. The next prime is 722156722571. The reversal of 722156722560 is 65227651227.

722156722560 is a `hidden beast` number, since 7 + 2 + 2 + 1 + 5 + 67 + 22 + 560 = 666.

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 127 ways as a sum of consecutive naturals, for example, 158818207 + ... + 158822753.

It is an arithmetic number, because the mean of its divisors is an integer number (3105203850).

Almost surely, 2^722156722560 is an apocalyptic number.

722156722560 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 722156722560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589864371200).

722156722560 is an abundant number, since it is smaller than the sum of its proper divisors (2457572019840).

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

722156722560 is a wasteful number, since it uses less digits than its factorization.

722156722560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696 (or 4678 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 722156722560 in words is "seven hundred twenty-two billion, one hundred fifty-six million, seven hundred twenty-two thousand, five hundred sixty".