61561614104 has 16 divisors (see below), whose sum is σ = 115477368720. Its totient is φ = 30767649120.

The previous prime is 61561614097. The next prime is 61561614109. The reversal of 61561614104 is 40141616516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61561614109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624844 + ... + 1662299.

It is an arithmetic number, because the mean of its divisors is an integer number (7217335545).

Almost surely, 2^61561614104 is an apocalyptic number.

It is an amenable number.

61561614104 is a deficient number, since it is larger than the sum of its proper divisors (53915754616).

61561614104 is a wasteful number, since it uses less digits than its factorization.

61561614104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289490 (or 3289486 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 61561614104 in words is "sixty-one billion, five hundred sixty-one million, six hundred fourteen thousand, one hundred four".