721151476920000 has 4480 divisors, whose sum is σ = 3286673127936000. Its totient is φ = 154596169728000.

The previous prime is 721151476919999. The next prime is 721151476920107. The reversal of 721151476920000 is 29674151127.

721151476920000 is a `hidden beast` number, since 7 + 2 + 1 + 151 + 476 + 9 + 20 + 0 + 0 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 451566359202 + ... + 451566360798.

Almost surely, 2^{721151476920000} is an apocalyptic number.

721151476920000 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 721151476920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1643336563968000).

721151476920000 is an abundant number, since it is smaller than the sum of its proper divisors (2565521651016000).

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

721151476920000 is a wasteful number, since it uses less digits than its factorization.

721151476920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 721151476920000 in words is "seven hundred twenty-one trillion, one hundred fifty-one billion, four hundred seventy-six million, nine hundred twenty thousand".