1556622346423 has 4 divisors (see below), whose sum is σ = 1638549838360. Its totient is φ = 1474694854488.

The previous prime is 1556622346417. The next prime is 1556622346439. The reversal of 1556622346423 is 3246432266551.

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

It is a cyclic number.

It is not a de Polignac number, because 1556622346423 - 2⁹ = 1556622345911 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 (1556622346493) 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, 40963745940 + ... + 40963745977.

It is an arithmetic number, because the mean of its divisors is an integer number (409637459590).

Almost surely, 2^{1556622346423} is an apocalyptic number.

1556622346423 is a deficient number, since it is larger than the sum of its proper divisors (81927491937).

1556622346423 is an equidigital number, since it uses as much as digits as its factorization.

1556622346423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81927491936.

The product of its digits is 6220800, while the sum is 49.

The spelling of 1556622346423 in words is "one trillion, five hundred fifty-six billion, six hundred twenty-two million, three hundred forty-six thousand, four hundred twenty-three".