83880787213 has 2 divisors, whose sum is σ = 83880787214. Its totient is φ = 83880787212.

The previous prime is 83880787171. The next prime is 83880787229. The reversal of 83880787213 is 31278708838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79116750729 + 4764036484 = 281277^2 + 69022^2 .

It is a cyclic number.

It is not a de Polignac number, because 83880787213 - 2¹⁷ = 83880656141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83880787013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41940393606 + 41940393607.

It is an arithmetic number, because the mean of its divisors is an integer number (41940393607).

Almost surely, 2^83880787213 is an apocalyptic number.

It is an amenable number.

83880787213 is a deficient number, since it is larger than the sum of its proper divisors (1).

83880787213 is an equidigital number, since it uses as much as digits as its factorization.

83880787213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 83880787213 in words is "eighty-three billion, eight hundred eighty million, seven hundred eighty-seven thousand, two hundred thirteen".