85729040551 has 64 divisors (see below), whose sum is σ = 113091158016. Its totient is φ = 63044467200.

The previous prime is 85729040549. The next prime is 85729040557. The reversal of 85729040551 is 15504092758.

It is not a de Polignac number, because 85729040551 - 2¹ = 85729040549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85729040557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21884445 + ... + 21888361.

It is an arithmetic number, because the mean of its divisors is an integer number (1767049344).

Almost surely, 2^85729040551 is an apocalyptic number.

85729040551 is a deficient number, since it is larger than the sum of its proper divisors (27362117465).

85729040551 is a wasteful number, since it uses less digits than its factorization.

85729040551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192.

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 85729040551 in words is "eighty-five billion, seven hundred twenty-nine million, forty thousand, five hundred fifty-one".