61774068927 has 4 divisors (see below), whose sum is σ = 82365425240. Its totient is φ = 41182712616.

The previous prime is 61774068901. The next prime is 61774069003. The reversal of 61774068927 is 72986047716.

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

It is not a de Polignac number, because 61774068927 - 2¹² = 61774064831 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 (61774061927) 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, 10295678152 + ... + 10295678157.

It is an arithmetic number, because the mean of its divisors is an integer number (20591356310).

Almost surely, 2^61774068927 is an apocalyptic number.

61774068927 is a deficient number, since it is larger than the sum of its proper divisors (20591356313).

61774068927 is a wasteful number, since it uses less digits than its factorization.

61774068927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20591356312.

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 61774068927 in words is "sixty-one billion, seven hundred seventy-four million, sixty-eight thousand, nine hundred twenty-seven".