609959725628 has 18 divisors (see below), whose sum is σ = 1173290299608. Its totient is φ = 277254420520.

The previous prime is 609959725591. The next prime is 609959725663. The reversal of 609959725628 is 826527959906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 630123200 + ... + 630124167.

Almost surely, 2^609959725628 is an apocalyptic number.

It is an amenable number.

609959725628 is a deficient number, since it is larger than the sum of its proper divisors (563330573980).

609959725628 is a wasteful number, since it uses less digits than its factorization.

609959725628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260247393 (or 1260247380 counting only the distinct ones).

The product of its (nonzero) digits is 146966400, while the sum is 68.

The spelling of 609959725628 in words is "six hundred nine billion, nine hundred fifty-nine million, seven hundred twenty-five thousand, six hundred twenty-eight".