2238778887751 has 16 divisors (see below), whose sum is σ = 2567588944896. Its totient is φ = 1912223164896.

The previous prime is 2238778887727. The next prime is 2238778887841. The reversal of 2238778887751 is 1577888778322.

It is a cyclic number.

It is not a de Polignac number, because 2238778887751 - 2¹³ = 2238778879559 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 (2238778887451) 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 15 ways as a sum of consecutive naturals, for example, 2939400 + ... + 3621826.

It is an arithmetic number, because the mean of its divisors is an integer number (160474309056).

Almost surely, 2^{2238778887751} is an apocalyptic number.

2238778887751 is a deficient number, since it is larger than the sum of its proper divisors (328810057145).

2238778887751 is a wasteful number, since it uses less digits than its factorization.

2238778887751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684078.

The product of its digits is 590069760, while the sum is 73.

The spelling of 2238778887751 in words is "two trillion, two hundred thirty-eight billion, seven hundred seventy-eight million, eight hundred eighty-seven thousand, seven hundred fifty-one".