83977213337 has 2 divisors, whose sum is σ = 83977213338. Its totient is φ = 83977213336.

The previous prime is 83977213277. The next prime is 83977213361. The reversal of 83977213337 is 73331277938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79692725401 + 4284487936 = 282299^2 + 65456^2 .

It is a cyclic number.

It is not a de Polignac number, because 83977213337 - 2¹⁰ = 83977212313 is a prime.

It is not a weakly prime, because it can be changed into another prime (83977213367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41988606668 + 41988606669.

It is an arithmetic number, because the mean of its divisors is an integer number (41988606669).

Almost surely, 2^83977213337 is an apocalyptic number.

It is an amenable number.

83977213337 is a deficient number, since it is larger than the sum of its proper divisors (1).

83977213337 is an equidigital number, since it uses as much as digits as its factorization.

83977213337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 53.

The spelling of 83977213337 in words is "eighty-three billion, nine hundred seventy-seven million, two hundred thirteen thousand, three hundred thirty-seven".