1356234878623 has 2 divisors, whose sum is σ = 1356234878624. Its totient is φ = 1356234878622.

The previous prime is 1356234878617. The next prime is 1356234878627. The reversal of 1356234878623 is 3268784326531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1356234878623 - 2⁵ = 1356234878591 is a prime.

It is a super-2 number, since 2×1356234878623² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356234878627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678117439311 + 678117439312.

It is an arithmetic number, because the mean of its divisors is an integer number (678117439312).

Almost surely, 2^{1356234878623} is an apocalyptic number.

1356234878623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356234878623 is an equidigital number, since it uses as much as digits as its factorization.

1356234878623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 58.

The spelling of 1356234878623 in words is "one trillion, three hundred fifty-six billion, two hundred thirty-four million, eight hundred seventy-eight thousand, six hundred twenty-three".