61077423194 has 4 divisors (see below), whose sum is σ = 91616134794. Its totient is φ = 30538711596.

The previous prime is 61077423193. The next prime is 61077423233. The reversal of 61077423194 is 49132477016.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 34731913225 + 26345509969 = 186365^2 + 162313^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61077423193) 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 as a sum of consecutive naturals, namely, 15269355797 + ... + 15269355800.

Almost surely, 2^61077423194 is an apocalyptic number.

61077423194 is a deficient number, since it is larger than the sum of its proper divisors (30538711600).

61077423194 is a wasteful number, since it uses less digits than its factorization.

61077423194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30538711599.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 61077423194 in words is "sixty-one billion, seventy-seven million, four hundred twenty-three thousand, one hundred ninety-four".