511523243401 has 16 divisors (see below), whose sum is σ = 551769470208. Its totient is φ = 472442169600.

The previous prime is 511523243389. The next prime is 511523243419. The reversal of 511523243401 is 104342325115.

It is a de Polignac number, because none of the positive numbers 2^k-511523243401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511523243431) 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, 125295 + ... + 1019188.

It is an arithmetic number, because the mean of its divisors is an integer number (34485591888).

Almost surely, 2^511523243401 is an apocalyptic number.

It is an amenable number.

511523243401 is a deficient number, since it is larger than the sum of its proper divisors (40246226807).

511523243401 is a wasteful number, since it uses less digits than its factorization.

511523243401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144992.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 511523243401 its reverse (104342325115), we get a palindrome (615865568516).

The spelling of 511523243401 in words is "five hundred eleven billion, five hundred twenty-three million, two hundred forty-three thousand, four hundred one".