381288872101 has 4 divisors (see below), whose sum is σ = 386115313600. Its totient is φ = 376462430604.

The previous prime is 381288872099. The next prime is 381288872119. The reversal of 381288872101 is 101278882183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101278882183 = 7537 ⋅13437559.

It is a cyclic number.

It is not a de Polignac number, because 381288872101 - 2¹ = 381288872099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381288872401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2413220631 + ... + 2413220788.

It is an arithmetic number, because the mean of its divisors is an integer number (96528828400).

Almost surely, 2^381288872101 is an apocalyptic number.

It is an amenable number.

381288872101 is a deficient number, since it is larger than the sum of its proper divisors (4826441499).

381288872101 is an equidigital number, since it uses as much as digits as its factorization.

381288872101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826441498.

The product of its (nonzero) digits is 344064, while the sum is 49.

The spelling of 381288872101 in words is "three hundred eighty-one billion, two hundred eighty-eight million, eight hundred seventy-two thousand, one hundred one".