381721256104 has 16 divisors (see below), whose sum is σ = 715842832320. Its totient is φ = 190829834160.

The previous prime is 381721256089. The next prime is 381721256123. The reversal of 381721256104 is 401652127183.

It is a super-2 number, since 2×381721256104² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3796512 + ... + 3895759.

It is an arithmetic number, because the mean of its divisors is an integer number (44740177020).

Almost surely, 2^381721256104 is an apocalyptic number.

It is an amenable number.

381721256104 is a deficient number, since it is larger than the sum of its proper divisors (334121576216).

381721256104 is a wasteful number, since it uses less digits than its factorization.

381721256104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698480 (or 7698476 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 381721256104 in words is "three hundred eighty-one billion, seven hundred twenty-one million, two hundred fifty-six thousand, one hundred four".