61650505660160 has 72 divisors (see below), whose sum is σ = 151273988598096. Its totient is φ = 24058733895680.

The previous prime is 61650505660151. The next prime is 61650505660187. The reversal of 61650505660160 is 6106650505616.

It is a super-2 number, since 2×61650505660160² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587318954 + ... + 587423913.

It is an arithmetic number, because the mean of its divisors is an integer number (2101027619418).

Almost surely, 2^{61650505660160} is an apocalyptic number.

It is an amenable number.

61650505660160 is an abundant number, since it is smaller than the sum of its proper divisors (89623482937936).

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

61650505660160 is a wasteful number, since it uses less digits than its factorization.

61650505660160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174742929 (or 1174742915 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 61650505660160 in words is "sixty-one trillion, six hundred fifty billion, five hundred five million, six hundred sixty thousand, one hundred sixty".