61536987183 has 16 divisors (see below), whose sum is σ = 93835496960. Its totient is φ = 35139674016.

The previous prime is 61536987173. The next prime is 61536987199. The reversal of 61536987183 is 38178963516.

It is not a de Polignac number, because 61536987183 - 2²⁶ = 61469878319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61536987133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982168 + ... + 1042941.

It is an arithmetic number, because the mean of its divisors is an integer number (5864718560).

Almost surely, 2^61536987183 is an apocalyptic number.

61536987183 is a deficient number, since it is larger than the sum of its proper divisors (32298509777).

61536987183 is a wasteful number, since it uses less digits than its factorization.

61536987183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026566.

The product of its digits is 6531840, while the sum is 57.

The spelling of 61536987183 in words is "sixty-one billion, five hundred thirty-six million, nine hundred eighty-seven thousand, one hundred eighty-three".