61845881163 has 16 divisors (see below), whose sum is σ = 94692259200. Its totient is φ = 35509596480.

The previous prime is 61845881161. The next prime is 61845881177. The reversal of 61845881163 is 36118854816.

It is not a de Polignac number, because 61845881163 - 2¹ = 61845881161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61845881161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49318258 + ... + 49319511.

It is an arithmetic number, because the mean of its divisors is an integer number (5918266200).

Almost surely, 2^61845881163 is an apocalyptic number.

61845881163 is a deficient number, since it is larger than the sum of its proper divisors (32846378037).

61845881163 is a wasteful number, since it uses less digits than its factorization.

61845881163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98637802.

The product of its digits is 1105920, while the sum is 51.

The spelling of 61845881163 in words is "sixty-one billion, eight hundred forty-five million, eight hundred eighty-one thousand, one hundred sixty-three".