721367476480 has 288 divisors, whose sum is σ = 1992154348800. Its totient is φ = 245155921920.

The previous prime is 721367476477. The next prime is 721367476481. The reversal of 721367476480 is 84674763127.

It is a happy number.

It is a super-2 number, since 2×721367476480² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (721367476481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616026295 + ... + 616027465.

It is an arithmetic number, because the mean of its divisors is an integer number (6917202600).

Almost surely, 2^721367476480 is an apocalyptic number.

721367476480 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 721367476480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996077174400).

721367476480 is an abundant number, since it is smaller than the sum of its proper divisors (1270786872320).

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

721367476480 is a wasteful number, since it uses less digits than its factorization.

721367476480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 721367476480 in words is "seven hundred twenty-one billion, three hundred sixty-seven million, four hundred seventy-six thousand, four hundred eighty".