83941240891 has 2 divisors, whose sum is σ = 83941240892. Its totient is φ = 83941240890.

The previous prime is 83941240829. The next prime is 83941240927. The reversal of 83941240891 is 19804214938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83941240891 - 2⁷ = 83941240763 is a prime.

It is a super-2 number, since 2×83941240891² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83941240811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41970620445 + 41970620446.

It is an arithmetic number, because the mean of its divisors is an integer number (41970620446).

Almost surely, 2^83941240891 is an apocalyptic number.

83941240891 is a deficient number, since it is larger than the sum of its proper divisors (1).

83941240891 is an equidigital number, since it uses as much as digits as its factorization.

83941240891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 83941240891 in words is "eighty-three billion, nine hundred forty-one million, two hundred forty thousand, eight hundred ninety-one".