61610650158 has 16 divisors (see below), whose sum is σ = 123238155600. Its totient is φ = 20534074176.

The previous prime is 61610650117. The next prime is 61610650163. The reversal of 61610650158 is 85105601616.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654535 + ... + 742722.

It is an arithmetic number, because the mean of its divisors is an integer number (7702384725).

Almost surely, 2^61610650158 is an apocalyptic number.

61610650158 is an abundant number, since it is smaller than the sum of its proper divisors (61627505442).

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

61610650158 is a wasteful number, since it uses less digits than its factorization.

61610650158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404611.

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 61610650158 in words is "sixty-one billion, six hundred ten million, six hundred fifty thousand, one hundred fifty-eight".