381321001504 has 24 divisors (see below), whose sum is σ = 754092218880. Its totient is φ = 189805517376.

The previous prime is 381321001489. The next prime is 381321001507. The reversal of 381321001504 is 405100123183.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (381321001507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26710984 + ... + 26725255.

It is an arithmetic number, because the mean of its divisors is an integer number (31420509120).

Almost surely, 2^381321001504 is an apocalyptic number.

It is an amenable number.

381321001504 is a deficient number, since it is larger than the sum of its proper divisors (372771217376).

381321001504 is a wasteful number, since it uses less digits than its factorization.

381321001504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53436472 (or 53436464 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 381321001504 its reverse (405100123183), we get a palindrome (786421124687).

The spelling of 381321001504 in words is "three hundred eighty-one billion, three hundred twenty-one million, one thousand, five hundred four".