385473012921 has 48 divisors (see below), whose sum is σ = 592964186256. Its totient is φ = 240465051648.

The previous prime is 385473012857. The next prime is 385473012929. The reversal of 385473012921 is 129210374583.

It is a happy number.

385473012921 is a `hidden beast` number, since 3 + 8 + 54 + 7 + 301 + 292 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 35794748025 + 349678264896 = 189195^2 + 591336^2 .

It is not a de Polignac number, because 385473012921 - 2⁶ = 385473012857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385473012929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67707151 + ... + 67712843.

It is an arithmetic number, because the mean of its divisors is an integer number (12353420547).

Almost surely, 2^385473012921 is an apocalyptic number.

It is an amenable number.

385473012921 is a deficient number, since it is larger than the sum of its proper divisors (207491173335).

385473012921 is a wasteful number, since it uses less digits than its factorization.

385473012921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8202 (or 8199 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 385473012921 in words is "three hundred eighty-five billion, four hundred seventy-three million, twelve thousand, nine hundred twenty-one".