83850432997 has 2 divisors, whose sum is σ = 83850432998. Its totient is φ = 83850432996.

The previous prime is 83850432959. The next prime is 83850433013. The reversal of 83850432997 is 79923405838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76909710276 + 6940722721 = 277326^2 + 83311^2 .

It is a cyclic number.

It is not a de Polignac number, because 83850432997 - 2²³ = 83842044389 is a prime.

It is a super-2 number, since 2×83850432997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83850432907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41925216498 + 41925216499.

It is an arithmetic number, because the mean of its divisors is an integer number (41925216499).

Almost surely, 2^83850432997 is an apocalyptic number.

It is an amenable number.

83850432997 is a deficient number, since it is larger than the sum of its proper divisors (1).

83850432997 is an equidigital number, since it uses as much as digits as its factorization.

83850432997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 83850432997 in words is "eighty-three billion, eight hundred fifty million, four hundred thirty-two thousand, nine hundred ninety-seven".