42858454509 has 16 divisors (see below), whose sum is σ = 68378161600. Its totient is φ = 26374433328.

The previous prime is 42858454477. The next prime is 42858454523. The reversal of 42858454509 is 90545485824.

42858454509 is a `hidden beast` number, since 4 + 2 + 8 + 5 + 84 + 54 + 509 = 666.

It is not a de Polignac number, because 42858454509 - 2⁵ = 42858454477 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 (42858453509) 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, 61051579 + ... + 61052280.

It is an arithmetic number, because the mean of its divisors is an integer number (4273635100).

Almost surely, 2^42858454509 is an apocalyptic number.

It is an amenable number.

42858454509 is a deficient number, since it is larger than the sum of its proper divisors (25519707091).

42858454509 is a wasteful number, since it uses less digits than its factorization.

42858454509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122103881 (or 122103875 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 54.

The spelling of 42858454509 in words is "forty-two billion, eight hundred fifty-eight million, four hundred fifty-four thousand, five hundred nine".