1356394390023 has 4 divisors (see below), whose sum is σ = 1808525853368. Its totient is φ = 904262926680.

The previous prime is 1356394389979. The next prime is 1356394390081. The reversal of 1356394390023 is 3200934936531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1356394390023 - 2¹⁴ = 1356394373639 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 (1356394390093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226065731668 + ... + 226065731673.

It is an arithmetic number, because the mean of its divisors is an integer number (452131463342).

Almost surely, 2^{1356394390023} is an apocalyptic number.

1356394390023 is a deficient number, since it is larger than the sum of its proper divisors (452131463345).

1356394390023 is an equidigital number, since it uses as much as digits as its factorization.

1356394390023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452131463344.

The product of its (nonzero) digits is 1574640, while the sum is 48.

The spelling of 1356394390023 in words is "one trillion, three hundred fifty-six billion, three hundred ninety-four million, three hundred ninety thousand, twenty-three".