730555406520 has 32 divisors (see below), whose sum is σ = 2191666219920. Its totient is φ = 194814775040.

The previous prime is 730555406519. The next prime is 730555406549. The reversal of 730555406520 is 25604555037.

730555406520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×730555406520² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 3043980741 + ... + 3043980980.

Almost surely, 2^730555406520 is an apocalyptic number.

It is an amenable number.

730555406520 is an abundant number, since it is smaller than the sum of its proper divisors (1461110813400).

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

730555406520 is a wasteful number, since it uses less digits than its factorization.

730555406520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087961735 (or 6087961731 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 42.

The spelling of 730555406520 in words is "seven hundred thirty billion, five hundred fifty-five million, four hundred six thousand, five hundred twenty".