61834663867 has 4 divisors (see below), whose sum is σ = 65089119880. Its totient is φ = 58580207856.

The previous prime is 61834663843. The next prime is 61834663951. The reversal of 61834663867 is 76836643816.

It is a happy number.

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 61834663867 - 2¹⁹ = 61834139579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61834669867) 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, 1627227978 + ... + 1627228015.

It is an arithmetic number, because the mean of its divisors is an integer number (16272279970).

Almost surely, 2^61834663867 is an apocalyptic number.

61834663867 is a deficient number, since it is larger than the sum of its proper divisors (3254456013).

61834663867 is a wasteful number, since it uses less digits than its factorization.

61834663867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254456012.

The product of its digits is 20901888, while the sum is 58.

The spelling of 61834663867 in words is "sixty-one billion, eight hundred thirty-four million, six hundred sixty-three thousand, eight hundred sixty-seven".