610851721504 has 12 divisors (see below), whose sum is σ = 1202614326774. Its totient is φ = 305425860736.

The previous prime is 610851721499. The next prime is 610851721541. The reversal of 610851721504 is 405127158016.

It can be written as a sum of positive squares in only one way, i.e., 610804771600 + 46949904 = 781540^2 + 6852^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9544558117 + ... + 9544558180.

Almost surely, 2^610851721504 is an apocalyptic number.

It is an amenable number.

610851721504 is a deficient number, since it is larger than the sum of its proper divisors (591762605270).

610851721504 is a wasteful number, since it uses less digits than its factorization.

610851721504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19089116307 (or 19089116299 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 610851721504 in words is "six hundred ten billion, eight hundred fifty-one million, seven hundred twenty-one thousand, five hundred four".