83078767571 has 4 divisors (see below), whose sum is σ = 83103401472. Its totient is φ = 83054133672.

The previous prime is 83078767561. The next prime is 83078767573. The reversal of 83078767571 is 17576787038.

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 83078767571 - 2⁶ = 83078767507 is a prime.

It is a super-2 number, since 2×83078767571² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83078767571.

It is not an unprimeable number, because it can be changed into a prime (83078767573) 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, 12311891 + ... + 12318636.

It is an arithmetic number, because the mean of its divisors is an integer number (20775850368).

Almost surely, 2^83078767571 is an apocalyptic number.

83078767571 is a deficient number, since it is larger than the sum of its proper divisors (24633901).

83078767571 is a wasteful number, since it uses less digits than its factorization.

83078767571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24633900.

The product of its (nonzero) digits is 13829760, while the sum is 59.

The spelling of 83078767571 in words is "eighty-three billion, seventy-eight million, seven hundred sixty-seven thousand, five hundred seventy-one".