61166328838 has 4 divisors (see below), whose sum is σ = 91749493260. Its totient is φ = 30583164418.

The previous prime is 61166328829. The next prime is 61166328887. The reversal of 61166328838 is 83882366116.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15291582208 + ... + 15291582211.

It is an arithmetic number, because the mean of its divisors is an integer number (22937373315).

Almost surely, 2^61166328838 is an apocalyptic number.

61166328838 is a deficient number, since it is larger than the sum of its proper divisors (30583164422).

61166328838 is a wasteful number, since it uses less digits than its factorization.

61166328838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30583164421.

The product of its digits is 1990656, while the sum is 52.

The spelling of 61166328838 in words is "sixty-one billion, one hundred sixty-six million, three hundred twenty-eight thousand, eight hundred thirty-eight".