83052778013 has 4 divisors (see below), whose sum is σ = 85916666940. Its totient is φ = 80188889088.

The previous prime is 83052777971. The next prime is 83052778021. The reversal of 83052778013 is 31087725038.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37120572889 + 45932205124 = 192667^2 + 214318^2 .

It is a cyclic number.

It is not a de Polignac number, because 83052778013 - 2¹⁴ = 83052761629 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 (83052778513) 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, 1431944420 + ... + 1431944477.

It is an arithmetic number, because the mean of its divisors is an integer number (21479166735).

Almost surely, 2^83052778013 is an apocalyptic number.

It is an amenable number.

83052778013 is a deficient number, since it is larger than the sum of its proper divisors (2863888927).

83052778013 is a wasteful number, since it uses less digits than its factorization.

83052778013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863888926.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 83052778013 in words is "eighty-three billion, fifty-two million, seven hundred seventy-eight thousand, thirteen".