61500565166020 has 48 divisors (see below), whose sum is σ = 129733980042240. Its totient is φ = 24489224032896.

The previous prime is 61500565165997. The next prime is 61500565166059. The reversal of 61500565166020 is 2066156500516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176973154 + ... + 177320326.

It is an arithmetic number, because the mean of its divisors is an integer number (2702791250880).

Almost surely, 2^{61500565166020} is an apocalyptic number.

It is an amenable number.

61500565166020 is an abundant number, since it is smaller than the sum of its proper divisors (68233414876220).

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

61500565166020 is a wasteful number, since it uses less digits than its factorization.

61500565166020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387124 (or 387122 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 61500565166020 in words is "sixty-one trillion, five hundred billion, five hundred sixty-five million, one hundred sixty-six thousand, twenty".