61382078183 has 4 divisors (see below), whose sum is σ = 61412362440. Its totient is φ = 61351793928.

The previous prime is 61382078123. The next prime is 61382078189. The reversal of 61382078183 is 38187028316.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61382078183 - 2³⁰ = 60308336359 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 (61382078189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15139088 + ... + 15143141.

It is an arithmetic number, because the mean of its divisors is an integer number (15353090610).

Almost surely, 2^61382078183 is an apocalyptic number.

61382078183 is a deficient number, since it is larger than the sum of its proper divisors (30284257).

61382078183 is a wasteful number, since it uses less digits than its factorization.

61382078183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30284256.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 61382078183 in words is "sixty-one billion, three hundred eighty-two million, seventy-eight thousand, one hundred eighty-three".