61423227693 has 40 divisors (see below), whose sum is σ = 93131349696. Its totient is φ = 40335926400.

The previous prime is 61423227667. The next prime is 61423227703. The reversal of 61423227693 is 39672232416.

61423227693 is a `hidden beast` number, since 61 + 4 + 232 + 276 + 93 = 666.

It is not a de Polignac number, because 61423227693 - 2²¹ = 61421130541 is a prime.

It is a super-2 number, since 2×61423227693² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61423227653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7420405 + ... + 7428677.

Almost surely, 2^61423227693 is an apocalyptic number.

It is an amenable number.

61423227693 is a deficient number, since it is larger than the sum of its proper divisors (31708122003).

61423227693 is a wasteful number, since it uses less digits than its factorization.

61423227693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9647 (or 9638 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The spelling of 61423227693 in words is "sixty-one billion, four hundred twenty-three million, two hundred twenty-seven thousand, six hundred ninety-three".