385423571511 has 32 divisors (see below), whose sum is σ = 624935942400. Its totient is φ = 232829108640.

The previous prime is 385423571479. The next prime is 385423571567. The reversal of 385423571511 is 115175324583.

385423571511 is a `hidden beast` number, since 3 + 8 + 5 + 4 + 23 + 571 + 51 + 1 = 666.

It is not a de Polignac number, because 385423571511 - 2⁵ = 385423571479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385423576511) 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, 2022376 + ... + 2204733.

It is an arithmetic number, because the mean of its divisors is an integer number (19529248200).

Almost surely, 2^385423571511 is an apocalyptic number.

385423571511 is a deficient number, since it is larger than the sum of its proper divisors (239512370889).

385423571511 is a wasteful number, since it uses less digits than its factorization.

385423571511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227436 (or 4227430 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The spelling of 385423571511 in words is "three hundred eighty-five billion, four hundred twenty-three million, five hundred seventy-one thousand, five hundred eleven".