857752750551 has 4 divisors (see below), whose sum is σ = 1143670334072. Its totient is φ = 571835167032.

The previous prime is 857752750549. The next prime is 857752750627. The reversal of 857752750551 is 155057257758.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 857752750551 - 2¹ = 857752750549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 857752750491 and 857752750500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857752750531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142958791756 + ... + 142958791761.

It is an arithmetic number, because the mean of its divisors is an integer number (285917583518).

Almost surely, 2^857752750551 is an apocalyptic number.

857752750551 is a deficient number, since it is larger than the sum of its proper divisors (285917583521).

857752750551 is a wasteful number, since it uses less digits than its factorization.

857752750551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285917583520.

The product of its (nonzero) digits is 17150000, while the sum is 57.

The spelling of 857752750551 in words is "eight hundred fifty-seven billion, seven hundred fifty-two million, seven hundred fifty thousand, five hundred fifty-one".