8234787815423 has 32 divisors (see below), whose sum is σ = 9174009341952. Its totient is φ = 7342970054400.

The previous prime is 8234787815411. The next prime is 8234787815453. The reversal of 8234787815423 is 3245187874328.

It is a Cunningham number, because it is equal to 2869632²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8234787815423 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8234787815453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117619958 + ... + 117689948.

It is an arithmetic number, because the mean of its divisors is an integer number (286687791936).

Almost surely, 2^{8234787815423} is an apocalyptic number.

8234787815423 is a deficient number, since it is larger than the sum of its proper divisors (939221526529).

8234787815423 is a wasteful number, since it uses less digits than its factorization.

8234787815423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72215.

The product of its digits is 72253440, while the sum is 62.

The spelling of 8234787815423 in words is "eight trillion, two hundred thirty-four billion, seven hundred eighty-seven million, eight hundred fifteen thousand, four hundred twenty-three".