83671280993 has 2 divisors, whose sum is σ = 83671280994. Its totient is φ = 83671280992.

The previous prime is 83671280983. The next prime is 83671281047. The reversal of 83671280993 is 39908217638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83418725329 + 252555664 = 288823^2 + 15892^2 .

It is a cyclic number.

It is not a de Polignac number, because 83671280993 - 2⁴ = 83671280977 is a prime.

It is not a weakly prime, because it can be changed into another prime (83671280983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41835640496 + 41835640497.

It is an arithmetic number, because the mean of its divisors is an integer number (41835640497).

Almost surely, 2^83671280993 is an apocalyptic number.

It is an amenable number.

83671280993 is a deficient number, since it is larger than the sum of its proper divisors (1).

83671280993 is an equidigital number, since it uses as much as digits as its factorization.

83671280993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 83671280993 in words is "eighty-three billion, six hundred seventy-one million, two hundred eighty thousand, nine hundred ninety-three".