720146612257420 has 48 divisors (see below), whose sum is σ = 1564461541036800. Its totient is φ = 278124680180480.

The previous prime is 720146612257409. The next prime is 720146612257469. The reversal of 720146612257420 is 24752216641027.

It is a super-2 number, since 2×720146612257420² (a number of 31 digits) contains 22 as substring.

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, 191738886 + ... + 195458674.

It is an arithmetic number, because the mean of its divisors is an integer number (32592948771600).

Almost surely, 2^{720146612257420} is an apocalyptic number.

It is an amenable number.

720146612257420 is an abundant number, since it is smaller than the sum of its proper divisors (844314928779380).

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

720146612257420 is a wasteful number, since it uses less digits than its factorization.

720146612257420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053618 (or 4053616 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 49.

Adding to 720146612257420 its reverse (24752216641027), we get a palindrome (744898828898447).

The spelling of 720146612257420 in words is "seven hundred twenty trillion, one hundred forty-six billion, six hundred twelve million, two hundred fifty-seven thousand, four hundred twenty".