1553512005423 has 24 divisors (see below), whose sum is σ = 2588495315328. Its totient is φ = 879424682832.

The previous prime is 1553512005377. The next prime is 1553512005433. The reversal of 1553512005423 is 3245002153551.

1553512005423 is a `hidden beast` number, since 1 + 55 + 351 + 200 + 54 + 2 + 3 = 666.

It is not a de Polignac number, because 1553512005423 - 2¹⁰ = 1553512004399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553512005433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115221861 + ... + 115235342.

It is an arithmetic number, because the mean of its divisors is an integer number (107853971472).

Almost surely, 2^{1553512005423} is an apocalyptic number.

1553512005423 is a deficient number, since it is larger than the sum of its proper divisors (1034983309905).

1553512005423 is a wasteful number, since it uses less digits than its factorization.

1553512005423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230457323 (or 230457320 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 1553512005423 its reverse (3245002153551), we get a palindrome (4798514158974).

The spelling of 1553512005423 in words is "one trillion, five hundred fifty-three billion, five hundred twelve million, five thousand, four hundred twenty-three".