61756622138 has 8 divisors (see below), whose sum is σ = 92652863040. Its totient is φ = 30872334460.

The previous prime is 61756622113. The next prime is 61756622141. The reversal of 61756622138 is 83122665716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61756622092 and 61756622101.

It is an unprimeable number.

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, 2975378 + ... + 2996061.

It is an arithmetic number, because the mean of its divisors is an integer number (11581607880).

Almost surely, 2^61756622138 is an apocalyptic number.

61756622138 is a deficient number, since it is larger than the sum of its proper divisors (30896240902).

61756622138 is a wasteful number, since it uses less digits than its factorization.

61756622138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5976612.

The product of its digits is 725760, while the sum is 47.

The spelling of 61756622138 in words is "sixty-one billion, seven hundred fifty-six million, six hundred twenty-two thousand, one hundred thirty-eight".