84105250157 has 2 divisors, whose sum is σ = 84105250158. Its totient is φ = 84105250156.

The previous prime is 84105250133. The next prime is 84105250183. The reversal of 84105250157 is 75105250148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68103253156 + 16001997001 = 260966^2 + 126499^2 .

It is a cyclic number.

It is not a de Polignac number, because 84105250157 - 2¹⁸ = 84104988013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84105250157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84105250127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42052625078 + 42052625079.

It is an arithmetic number, because the mean of its divisors is an integer number (42052625079).

Almost surely, 2^84105250157 is an apocalyptic number.

It is an amenable number.

84105250157 is a deficient number, since it is larger than the sum of its proper divisors (1).

84105250157 is an equidigital number, since it uses as much as digits as its factorization.

84105250157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 38.

Subtracting from 84105250157 its reverse (75105250148), we obtain a palindrome (9000000009).

The spelling of 84105250157 in words is "eighty-four billion, one hundred five million, two hundred fifty thousand, one hundred fifty-seven".