511534442023403 has 16 divisors (see below), whose sum is σ = 551006980349952. Its totient is φ = 473498661636000.

The previous prime is 511534442023289. The next prime is 511534442023433. The reversal of 511534442023403 is 304320244435115.

It is not a de Polignac number, because 511534442023403 - 2³⁸ = 511259564116459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511534442023433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20799038 + ... + 38153228.

It is an arithmetic number, because the mean of its divisors is an integer number (34437936271872).

Almost surely, 2^{511534442023403} is an apocalyptic number.

511534442023403 is a deficient number, since it is larger than the sum of its proper divisors (39472538326549).

511534442023403 is a wasteful number, since it uses less digits than its factorization.

511534442023403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17395586.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 511534442023403 its reverse (304320244435115), we get a palindrome (815854686458518).

The spelling of 511534442023403 in words is "five hundred eleven trillion, five hundred thirty-four billion, four hundred forty-two million, twenty-three thousand, four hundred three".