61174543427 has 4 divisors (see below), whose sum is σ = 61205148000. Its totient is φ = 61143938856.

The previous prime is 61174543421. The next prime is 61174543459. The reversal of 61174543427 is 72434547116.

61174543427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61174543427 - 2²⁴ = 61157766211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61174543421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15299288 + ... + 15303285.

It is an arithmetic number, because the mean of its divisors is an integer number (15301287000).

Almost surely, 2^61174543427 is an apocalyptic number.

61174543427 is a deficient number, since it is larger than the sum of its proper divisors (30604573).

61174543427 is a wasteful number, since it uses less digits than its factorization.

61174543427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30604572.

The product of its digits is 564480, while the sum is 44.

The spelling of 61174543427 in words is "sixty-one billion, one hundred seventy-four million, five hundred forty-three thousand, four hundred twenty-seven".