511020045453 has 4 divisors (see below), whose sum is σ = 681360060608. Its totient is φ = 340680030300.

The previous prime is 511020045449. The next prime is 511020045461. The reversal of 511020045453 is 354540020115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 511020045453 - 2² = 511020045449 is a prime.

It is a super-2 number, since 2×511020045453² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 511020045453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511020045353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85170007573 + ... + 85170007578.

It is an arithmetic number, because the mean of its divisors is an integer number (170340015152).

Almost surely, 2^511020045453 is an apocalyptic number.

It is an amenable number.

511020045453 is a deficient number, since it is larger than the sum of its proper divisors (170340015155).

511020045453 is a wasteful number, since it uses less digits than its factorization.

511020045453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170340015154.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 511020045453 its reverse (354540020115), we get a palindrome (865560065568).

The spelling of 511020045453 in words is "five hundred eleven billion, twenty million, forty-five thousand, four hundred fifty-three".