721626979248 has 240 divisors, whose sum is σ = 2316402088000. Its totient is φ = 205435699200.

The previous prime is 721626979237. The next prime is 721626979253. The reversal of 721626979248 is 842979626127.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 465865578 + ... + 465867126.

Almost surely, 2^721626979248 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 721626979248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158201044000).

721626979248 is an abundant number, since it is smaller than the sum of its proper divisors (1594775108752).

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

721626979248 is a wasteful number, since it uses less digits than its factorization.

721626979248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2931 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 721626979248 in words is "seven hundred twenty-one billion, six hundred twenty-six million, nine hundred seventy-nine thousand, two hundred forty-eight".