726522217020 has 48 divisors (see below), whose sum is σ = 2260291343520. Its totient is φ = 193739257728.

The previous prime is 726522216997. The next prime is 726522217219. The reversal of 726522217020 is 20712225627.

726522217020 is a `hidden beast` number, since 7 + 26 + 522 + 21 + 70 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672705217 + ... + 672706296.

It is an arithmetic number, because the mean of its divisors is an integer number (47089402990).

Almost surely, 2^726522217020 is an apocalyptic number.

It is an amenable number.

726522217020 is an abundant number, since it is smaller than the sum of its proper divisors (1533769126500).

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

726522217020 is a wasteful number, since it uses less digits than its factorization.

726522217020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345411531 (or 1345411523 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 726522217020 in words is "seven hundred twenty-six billion, five hundred twenty-two million, two hundred seventeen thousand, twenty".