61774234271 has 4 divisors (see below), whose sum is σ = 61775262552. Its totient is φ = 61773205992.

The previous prime is 61774234243. The next prime is 61774234273. The reversal of 61774234271 is 17243247716.

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 61774234271 - 2¹⁰ = 61774233247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61774234273) 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, 418040 + ... + 546173.

It is an arithmetic number, because the mean of its divisors is an integer number (15443815638).

Almost surely, 2^61774234271 is an apocalyptic number.

61774234271 is a deficient number, since it is larger than the sum of its proper divisors (1028281).

61774234271 is an equidigital number, since it uses as much as digits as its factorization.

61774234271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028280.

The product of its digits is 395136, while the sum is 44.

The spelling of 61774234271 in words is "sixty-one billion, seven hundred seventy-four million, two hundred thirty-four thousand, two hundred seventy-one".