385774202881 has 4 divisors (see below), whose sum is σ = 387166889812. Its totient is φ = 384381515952.

The previous prime is 385774202837. The next prime is 385774202899. The reversal of 385774202881 is 188202477583.

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

It can be written as a sum of positive squares in 2 ways, for example, as 269585254656 + 116188948225 = 519216^2 + 340865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385774202881 is a prime.

It is a super-2 number, since 2×385774202881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385774200881) 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, 696343050 + ... + 696343603.

It is an arithmetic number, because the mean of its divisors is an integer number (96791722453).

Almost surely, 2^385774202881 is an apocalyptic number.

It is an amenable number.

385774202881 is a deficient number, since it is larger than the sum of its proper divisors (1392686931).

385774202881 is a wasteful number, since it uses less digits than its factorization.

385774202881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392686930.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 385774202881 in words is "three hundred eighty-five billion, seven hundred seventy-four million, two hundred two thousand, eight hundred eighty-one".