61685622422 has 4 divisors (see below), whose sum is σ = 92528433636. Its totient is φ = 30842811210.

The previous prime is 61685622403. The next prime is 61685622451. The reversal of 61685622422 is 22422658616.

It is a happy number.

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 (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15421405604 + ... + 15421405607.

It is an arithmetic number, because the mean of its divisors is an integer number (23132108409).

Almost surely, 2^61685622422 is an apocalyptic number.

61685622422 is a deficient number, since it is larger than the sum of its proper divisors (30842811214).

61685622422 is a wasteful number, since it uses less digits than its factorization.

61685622422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30842811213.

The product of its digits is 552960, while the sum is 44.

The spelling of 61685622422 in words is "sixty-one billion, six hundred eighty-five million, six hundred twenty-two thousand, four hundred twenty-two".