61030880661 has 8 divisors (see below), whose sum is σ = 81844881120. Its totient is φ = 40452066992.

The previous prime is 61030880641. The next prime is 61030880663. The reversal of 61030880661 is 16608803016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61030880661 - 2⁵ = 61030880629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61030880663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58796091 + ... + 58797128.

It is an arithmetic number, because the mean of its divisors is an integer number (10230610140).

Almost surely, 2^61030880661 is an apocalyptic number.

It is an amenable number.

61030880661 is a deficient number, since it is larger than the sum of its proper divisors (20814000459).

61030880661 is a wasteful number, since it uses less digits than its factorization.

61030880661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117593395.

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 61030880661 in words is "sixty-one billion, thirty million, eight hundred eighty thousand, six hundred sixty-one".