511053635442 has 32 divisors (see below), whose sum is σ = 1168169952384. Its totient is φ = 146009404800.

The previous prime is 511053635441. The next prime is 511053635471. The reversal of 511053635442 is 244536350115.

It is a happy number.

It is a super-2 number, since 2×511053635442² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511053635442.

It is not an unprimeable number, because it can be changed into a prime (511053635441) 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, 860092 + ... + 1327352.

It is an arithmetic number, because the mean of its divisors is an integer number (36505311012).

Almost surely, 2^511053635442 is an apocalyptic number.

511053635442 is an abundant number, since it is smaller than the sum of its proper divisors (657116316942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511053635442 is a wasteful number, since it uses less digits than its factorization.

511053635442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493314.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 511053635442 its reverse (244536350115), we get a palindrome (755589985557).

The spelling of 511053635442 in words is "five hundred eleven billion, fifty-three million, six hundred thirty-five thousand, four hundred forty-two".