8557142469 has 16 divisors (see below), whose sum is σ = 11440613184. Its totient is φ = 5689238400.

The previous prime is 8557142449. The next prime is 8557142519. The reversal of 8557142469 is 9642417558.

It is not a de Polignac number, because 8557142469 - 2⁸ = 8557142213 is a prime.

It is a super-2 number, since 2×8557142469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8557142449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2535267 + ... + 2538639.

It is an arithmetic number, because the mean of its divisors is an integer number (715038324).

Almost surely, 2^8557142469 is an apocalyptic number.

It is an amenable number.

8557142469 is a deficient number, since it is larger than the sum of its proper divisors (2883470715).

8557142469 is a wasteful number, since it uses less digits than its factorization.

8557142469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428.

The product of its digits is 2419200, while the sum is 51.

The square root of 8557142469 is about 92504.8240309661. The cubic root of 8557142469 is about 2045.3905929119.

The spelling of 8557142469 in words is "eight billion, five hundred fifty-seven million, one hundred forty-two thousand, four hundred sixty-nine".