381440406216 has 64 divisors (see below), whose sum is σ = 979480010880. Its totient is φ = 123697013760.

The previous prime is 381440406211. The next prime is 381440406227. The reversal of 381440406216 is 612604044183.

It is not an unprimeable number, because it can be changed into a prime (381440406211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11279365 + ... + 11313131.

It is an arithmetic number, because the mean of its divisors is an integer number (15304375170).

Almost surely, 2^381440406216 is an apocalyptic number.

It is an amenable number.

381440406216 is an abundant number, since it is smaller than the sum of its proper divisors (598039604664).

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

381440406216 is a wasteful number, since it uses less digits than its factorization.

381440406216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46534 (or 46530 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 381440406216 in words is "three hundred eighty-one billion, four hundred forty million, four hundred six thousand, two hundred sixteen".