1523453412623 has 4 divisors (see below), whose sum is σ = 1531870282488. Its totient is φ = 1515036542760.

The previous prime is 1523453412599. The next prime is 1523453412629. The reversal of 1523453412623 is 3262143543251.

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 1523453412623 - 2²⁰ = 1523452364047 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 (1523453412629) 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, 4208434661 + ... + 4208435022.

It is an arithmetic number, because the mean of its divisors is an integer number (382967570622).

Almost surely, 2^{1523453412623} is an apocalyptic number.

1523453412623 is a deficient number, since it is larger than the sum of its proper divisors (8416869865).

1523453412623 is an equidigital number, since it uses as much as digits as its factorization.

1523453412623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416869864.

The product of its digits is 518400, while the sum is 41.

Adding to 1523453412623 its reverse (3262143543251), we get a palindrome (4785596955874).

The spelling of 1523453412623 in words is "one trillion, five hundred twenty-three billion, four hundred fifty-three million, four hundred twelve thousand, six hundred twenty-three".