85251783129 has 16 divisors (see below), whose sum is σ = 114008401920. Its totient is φ = 56664925200.

The previous prime is 85251783119. The next prime is 85251783173. The reversal of 85251783129 is 92138715258.

It is not a de Polignac number, because 85251783129 - 2⁹ = 85251782617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85251783119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5694604 + ... + 5709554.

It is an arithmetic number, because the mean of its divisors is an integer number (7125525120).

Almost surely, 2^85251783129 is an apocalyptic number.

It is an amenable number.

85251783129 is a deficient number, since it is larger than the sum of its proper divisors (28756618791).

85251783129 is a wasteful number, since it uses less digits than its factorization.

85251783129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20500.

The product of its digits is 1209600, while the sum is 51.

The spelling of 85251783129 in words is "eighty-five billion, two hundred fifty-one million, seven hundred eighty-three thousand, one hundred twenty-nine".