661113230552 has 16 divisors (see below), whose sum is σ = 1256567956440. Its totient is φ = 326028442176.

The previous prime is 661113230419. The next prime is 661113230621. The reversal of 661113230552 is 255032311166.

It is a super-2 number, since 2×661113230552² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566021018 + ... + 566022185.

Almost surely, 2^661113230552 is an apocalyptic number.

It is an amenable number.

661113230552 is a deficient number, since it is larger than the sum of its proper divisors (595454725888).

661113230552 is a wasteful number, since it uses less digits than its factorization.

661113230552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132043282 (or 1132043278 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 661113230552 in words is "six hundred sixty-one billion, one hundred thirteen million, two hundred thirty thousand, five hundred fifty-two".