381372506195122 has 32 divisors (see below), whose sum is σ = 616503893045040. Its totient is φ = 175892230010880.

The previous prime is 381372506194973. The next prime is 381372506195183. The reversal of 381372506195122 is 221591605273183.

It is a happy number.

It is a Cunningham number, because it is equal to 19528761²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 301666911210721 + 79705594984401 = 17368561^2 + 8927799^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229517848 + ... + 231173500.

Almost surely, 2^{381372506195122} is an apocalyptic number.

381372506195122 is a deficient number, since it is larger than the sum of its proper divisors (235131386849918).

381372506195122 is a wasteful number, since it uses less digits than its factorization.

381372506195122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661998.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 381372506195122 in words is "three hundred eighty-one trillion, three hundred seventy-two billion, five hundred six million, one hundred ninety-five thousand, one hundred twenty-two".