1553741578423 has 4 divisors (see below), whose sum is σ = 1554232805608. Its totient is φ = 1553250351240.

The previous prime is 1553741578391. The next prime is 1553741578447. The reversal of 1553741578423 is 3248751473551.

It is a happy number.

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 1553741578423 - 2⁵ = 1553741578391 is a prime.

It is a super-2 number, since 2×1553741578423² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553744578423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245608848 + ... + 245615173.

It is an arithmetic number, because the mean of its divisors is an integer number (388558201402).

Almost surely, 2^{1553741578423} is an apocalyptic number.

1553741578423 is a deficient number, since it is larger than the sum of its proper divisors (491227185).

1553741578423 is an equidigital number, since it uses as much as digits as its factorization.

1553741578423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491227184.

The product of its digits is 14112000, while the sum is 55.

The spelling of 1553741578423 in words is "one trillion, five hundred fifty-three billion, seven hundred forty-one million, five hundred seventy-eight thousand, four hundred twenty-three".