83857001029 has 2 divisors, whose sum is σ = 83857001030. Its totient is φ = 83857001028.

The previous prime is 83857000961. The next prime is 83857001057. The reversal of 83857001029 is 92010075838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78472816900 + 5384184129 = 280130^2 + 73377^2 .

It is a cyclic number.

It is not a de Polignac number, because 83857001029 - 2⁷ = 83857000901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83857001089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41928500514 + 41928500515.

It is an arithmetic number, because the mean of its divisors is an integer number (41928500515).

Almost surely, 2^83857001029 is an apocalyptic number.

It is an amenable number.

83857001029 is a deficient number, since it is larger than the sum of its proper divisors (1).

83857001029 is an equidigital number, since it uses as much as digits as its factorization.

83857001029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 83857001029 in words is "eighty-three billion, eight hundred fifty-seven million, one thousand, twenty-nine".