722985553920 has 624 divisors, whose sum is σ = 2704734776448. Its totient is φ = 161525268480.

The previous prime is 722985553909. The next prime is 722985553931. The reversal of 722985553920 is 29355589227.

It is an interprime number because it is at equal distance from previous prime (722985553909) and next prime (722985553931).

It is a super-2 number, since 2×722985553920² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 950046340 + ... + 950047100.

Almost surely, 2^722985553920 is an apocalyptic number.

722985553920 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 722985553920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352367388224).

722985553920 is an abundant number, since it is smaller than the sum of its proper divisors (1981749222528).

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

722985553920 is an equidigital number, since it uses as much as digits as its factorization.

722985553920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 57.

The spelling of 722985553920 in words is "seven hundred twenty-two billion, nine hundred eighty-five million, five hundred fifty-three thousand, nine hundred twenty".