721950513082 has 16 divisors (see below), whose sum is σ = 1114282687752. Its totient is φ = 350657819200.

The previous prime is 721950513061. The next prime is 721950513101. The reversal of 721950513082 is 280315059127.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 713398147641 + 8552365441 = 844629^2 + 92479^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33706393 + ... + 33727804.

Almost surely, 2^721950513082 is an apocalyptic number.

721950513082 is a deficient number, since it is larger than the sum of its proper divisors (392332174670).

721950513082 is a wasteful number, since it uses less digits than its factorization.

721950513082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67434353.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 721950513082 in words is "seven hundred twenty-one billion, nine hundred fifty million, five hundred thirteen thousand, eighty-two".