512231245145553 has 32 divisors (see below), whose sum is σ = 731344139274240. Its totient is φ = 317946484975680.

The previous prime is 512231245145447. The next prime is 512231245145617. The reversal of 512231245145553 is 355541542132215.

It is a happy number.

It is not a de Polignac number, because 512231245145553 - 2²⁰ = 512231244096977 is a prime.

It is a super-2 number, since 2×512231245145553² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512231245146553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153953850 + ... + 157245827.

It is an arithmetic number, because the mean of its divisors is an integer number (22854504352320).

Almost surely, 2^{512231245145553} is an apocalyptic number.

It is an amenable number.

512231245145553 is a deficient number, since it is larger than the sum of its proper divisors (219112894128687).

512231245145553 is a wasteful number, since it uses less digits than its factorization.

512231245145553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311200197.

The product of its digits is 3600000, while the sum is 48.

Adding to 512231245145553 its reverse (355541542132215), we get a palindrome (867772787277768).

The spelling of 512231245145553 in words is "five hundred twelve trillion, two hundred thirty-one billion, two hundred forty-five million, one hundred forty-five thousand, five hundred fifty-three".