609691036556 has 48 divisors (see below), whose sum is σ = 1296021941760. Its totient is φ = 245140369920.

The previous prime is 609691036553. The next prime is 609691036561. The reversal of 609691036556 is 655630196906.

It is a super-2 number, since 2×609691036556² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (609691036553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5508485 + ... + 5618076.

It is an arithmetic number, because the mean of its divisors is an integer number (27000457120).

Almost surely, 2^609691036556 is an apocalyptic number.

It is an amenable number.

609691036556 is an abundant number, since it is smaller than the sum of its proper divisors (686330905204).

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

609691036556 is a wasteful number, since it uses less digits than its factorization.

609691036556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11126694 (or 11126692 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 56.

The spelling of 609691036556 in words is "six hundred nine billion, six hundred ninety-one million, thirty-six thousand, five hundred fifty-six".