609390537640 has 32 divisors (see below), whose sum is σ = 1400301665280. Its totient is φ = 238569911872.

The previous prime is 609390537631. The next prime is 609390537683. The reversal of 609390537640 is 46735093906.

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, 162070072 + ... + 162073831.

It is an arithmetic number, because the mean of its divisors is an integer number (43759427040).

Almost surely, 2^609390537640 is an apocalyptic number.

It is an amenable number.

609390537640 is an abundant number, since it is smaller than the sum of its proper divisors (790911127640).

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

609390537640 is a wasteful number, since it uses less digits than its factorization.

609390537640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324143961 (or 324143957 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 52.

The spelling of 609390537640 in words is "six hundred nine billion, three hundred ninety million, five hundred thirty-seven thousand, six hundred forty".