385871800281 has 32 divisors (see below), whose sum is σ = 594409622400. Its totient is φ = 220058542080.

The previous prime is 385871800277. The next prime is 385871800283. The reversal of 385871800281 is 182008178583.

It is not a de Polignac number, because 385871800281 - 2² = 385871800277 is a prime.

It is a super-2 number, since 2×385871800281² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (385871800283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2672385 + ... + 2813073.

It is an arithmetic number, because the mean of its divisors is an integer number (18575300700).

Almost surely, 2^385871800281 is an apocalyptic number.

It is an amenable number.

385871800281 is a deficient number, since it is larger than the sum of its proper divisors (208537822119).

385871800281 is a wasteful number, since it uses less digits than its factorization.

385871800281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145609.

The product of its (nonzero) digits is 860160, while the sum is 51.

The spelling of 385871800281 in words is "three hundred eighty-five billion, eight hundred seventy-one million, eight hundred thousand, two hundred eighty-one".