381571235408 has 40 divisors (see below), whose sum is σ = 806632032960. Its totient is φ = 173413687040.

The previous prime is 381571235291. The next prime is 381571235477. The reversal of 381571235408 is 804532175183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948716 + ... + 1289652.

It is an arithmetic number, because the mean of its divisors is an integer number (20165800824).

Almost surely, 2^381571235408 is an apocalyptic number.

It is an amenable number.

381571235408 is an abundant number, since it is smaller than the sum of its proper divisors (425060797552).

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

381571235408 is a wasteful number, since it uses less digits than its factorization.

381571235408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347315 (or 347309 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 381571235408 in words is "three hundred eighty-one billion, five hundred seventy-one million, two hundred thirty-five thousand, four hundred eight".