83774448613 has 24 divisors (see below), whose sum is σ = 89951510880. Its totient is φ = 77971887840.

The previous prime is 83774448551. The next prime is 83774448617. The reversal of 83774448613 is 31684447738.

It is a happy number.

It is not a de Polignac number, because 83774448613 - 2²¹ = 83772351461 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 (83774448617) 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 23 ways as a sum of consecutive naturals, for example, 6112098 + ... + 6125788.

It is an arithmetic number, because the mean of its divisors is an integer number (3747979620).

Almost surely, 2^83774448613 is an apocalyptic number.

It is an amenable number.

83774448613 is a deficient number, since it is larger than the sum of its proper divisors (6177062267).

83774448613 is a wasteful number, since it uses less digits than its factorization.

83774448613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14049 (or 14026 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 55.

The spelling of 83774448613 in words is "eighty-three billion, seven hundred seventy-four million, four hundred forty-eight thousand, six hundred thirteen".