2781589369923 has 48 divisors (see below), whose sum is σ = 5078697763776. Its totient is φ = 1427557582080.

The previous prime is 2781589369913. The next prime is 2781589369927. The reversal of 2781589369923 is 3299639851872.

2781589369923 is a `hidden beast` number, since 2 + 7 + 8 + 1 + 589 + 36 + 9 + 9 + 2 + 3 = 666.

It is not a de Polignac number, because 2781589369923 - 2¹⁴ = 2781589353539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2781589369927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45865968 + ... + 45926573.

It is an arithmetic number, because the mean of its divisors is an integer number (105806203412).

Almost surely, 2^{2781589369923} is an apocalyptic number.

2781589369923 is a deficient number, since it is larger than the sum of its proper divisors (2297108393853).

2781589369923 is a wasteful number, since it uses less digits than its factorization.

2781589369923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91792604 (or 91792601 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 72.

The spelling of 2781589369923 in words is "two trillion, seven hundred eighty-one billion, five hundred eighty-nine million, three hundred sixty-nine thousand, nine hundred twenty-three".