381435069906 has 48 divisors (see below), whose sum is σ = 901800900000. Its totient is φ = 115557269760.

The previous prime is 381435069889. The next prime is 381435069907. The reversal of 381435069906 is 609960534183.

381435069906 is a `hidden beast` number, since 3 + 8 + 1 + 43 + 506 + 9 + 90 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (381435069907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551970 + ... + 1033218.

It is an arithmetic number, because the mean of its divisors is an integer number (18787518750).

Almost surely, 2^381435069906 is an apocalyptic number.

381435069906 is an abundant number, since it is smaller than the sum of its proper divisors (520365830094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381435069906 is a wasteful number, since it uses less digits than its factorization.

381435069906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485271 (or 485268 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 381435069906 in words is "three hundred eighty-one billion, four hundred thirty-five million, sixty-nine thousand, nine hundred six".