83251869157 has 8 divisors (see below), whose sum is σ = 83600518680. Its totient is φ = 82903591680.

The previous prime is 83251869119. The next prime is 83251869167. The reversal of 83251869157 is 75196815238.

It is a Cunningham number, because it is equal to 288534²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 56260993636 + 26990875521 = 237194^2 + 164289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83251869157 - 2¹⁵ = 83251836389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83251869098 and 83251869107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83251869167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360063 + ... + 544195.

It is an arithmetic number, because the mean of its divisors is an integer number (10450064835).

Almost surely, 2^83251869157 is an apocalyptic number.

It is an amenable number.

83251869157 is a deficient number, since it is larger than the sum of its proper divisors (348649523).

83251869157 is a wasteful number, since it uses less digits than its factorization.

83251869157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186023.

The product of its digits is 3628800, while the sum is 55.

The spelling of 83251869157 in words is "eighty-three billion, two hundred fifty-one million, eight hundred sixty-nine thousand, one hundred fifty-seven".