2381193121455 has 24 divisors (see below), whose sum is σ = 4370189730192. Its totient is φ = 1195265566464.

The previous prime is 2381193121453. The next prime is 2381193121529. The reversal of 2381193121455 is 5541213911832.

2381193121455 is a `hidden beast` number, since 2 + 3 + 8 + 1 + 193 + 1 + 2 + 1 + 455 = 666.

It is not a de Polignac number, because 2381193121455 - 2¹ = 2381193121453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2381193121455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381193121453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1556334609 + ... + 1556336138.

It is an arithmetic number, because the mean of its divisors is an integer number (182091238758).

Almost surely, 2^{2381193121455} is an apocalyptic number.

2381193121455 is a deficient number, since it is larger than the sum of its proper divisors (1988996608737).

2381193121455 is a wasteful number, since it uses less digits than its factorization.

2381193121455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112670775 (or 3112670772 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The spelling of 2381193121455 in words is "two trillion, three hundred eighty-one billion, one hundred ninety-three million, one hundred twenty-one thousand, four hundred fifty-five".