83407873897 has 2 divisors, whose sum is σ = 83407873898. Its totient is φ = 83407873896.

The previous prime is 83407873889. The next prime is 83407873973. The reversal of 83407873897 is 79837870438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58827591936 + 24580281961 = 242544^2 + 156781^2 .

It is a cyclic number.

It is not a de Polignac number, because 83407873897 - 2³ = 83407873889 is a prime.

It is not a weakly prime, because it can be changed into another prime (83407873847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41703936948 + 41703936949.

It is an arithmetic number, because the mean of its divisors is an integer number (41703936949).

Almost surely, 2^83407873897 is an apocalyptic number.

It is an amenable number.

83407873897 is a deficient number, since it is larger than the sum of its proper divisors (1).

83407873897 is an equidigital number, since it uses as much as digits as its factorization.

83407873897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56899584, while the sum is 64.

The spelling of 83407873897 in words is "eighty-three billion, four hundred seven million, eight hundred seventy-three thousand, eight hundred ninety-seven".