83407873973 has 2 divisors, whose sum is σ = 83407873974. Its totient is φ = 83407873972.

The previous prime is 83407873897. The next prime is 83407873979. The reversal of 83407873973 is 37937870438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80941957009 + 2465916964 = 284503^2 + 49658^2 .

It is a cyclic number.

It is not a de Polignac number, because 83407873973 - 2²⁸ = 83139438517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83407873979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41703936986 + 41703936987.

It is an arithmetic number, because the mean of its divisors is an integer number (41703936987).

Almost surely, 2^83407873973 is an apocalyptic number.

It is an amenable number.

83407873973 is a deficient number, since it is larger than the sum of its proper divisors (1).

83407873973 is an equidigital number, since it uses as much as digits as its factorization.

83407873973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 59.

The spelling of 83407873973 in words is "eighty-three billion, four hundred seven million, eight hundred seventy-three thousand, nine hundred seventy-three".