720459234540 has 72 divisors (see below), whose sum is σ = 2189955680640. Its totient is φ = 191721348864.

The previous prime is 720459234493. The next prime is 720459234571. The reversal of 720459234540 is 45432954027.

720459234540 is a `hidden beast` number, since 7 + 2 + 0 + 4 + 592 + 3 + 4 + 54 + 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 23 ways as a sum of consecutive naturals, for example, 4091809 + ... + 4264248.

It is an arithmetic number, because the mean of its divisors is an integer number (30416051120).

Almost surely, 2^720459234540 is an apocalyptic number.

It is an amenable number.

720459234540 is an abundant number, since it is smaller than the sum of its proper divisors (1469496446100).

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

720459234540 is a wasteful number, since it uses less digits than its factorization.

720459234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356551 (or 8356546 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 720459234540 in words is "seven hundred twenty billion, four hundred fifty-nine million, two hundred thirty-four thousand, five hundred forty".