85844782551 has 8 divisors (see below), whose sum is σ = 124865138304. Its totient is φ = 52027140920.

The previous prime is 85844782549. The next prime is 85844782577. The reversal of 85844782551 is 15528744858.

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 85844782551 - 2¹ = 85844782549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85844782491 and 85844782500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85844782501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300678491 + ... + 1300678556.

It is an arithmetic number, because the mean of its divisors is an integer number (15608142288).

Almost surely, 2^85844782551 is an apocalyptic number.

85844782551 is a deficient number, since it is larger than the sum of its proper divisors (39020355753).

85844782551 is a wasteful number, since it uses less digits than its factorization.

85844782551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601357061.

The product of its digits is 14336000, while the sum is 57.

The spelling of 85844782551 in words is "eighty-five billion, eight hundred forty-four million, seven hundred eighty-two thousand, five hundred fifty-one".