810430442425551 has 16 divisors (see below), whose sum is σ = 1117836790725600. Its totient is φ = 521655584462208.

The previous prime is 810430442425547. The next prime is 810430442425559. The reversal of 810430442425551 is 155524244034018.

It is not a de Polignac number, because 810430442425551 - 2² = 810430442425547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 810430442425551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810430442425559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53503185 + ... + 66958581.

It is an arithmetic number, because the mean of its divisors is an integer number (69864799420350).

Almost surely, 2^{810430442425551} is an apocalyptic number.

810430442425551 is a deficient number, since it is larger than the sum of its proper divisors (307406348300049).

810430442425551 is a wasteful number, since it uses less digits than its factorization.

810430442425551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14147738.

The product of its (nonzero) digits is 3072000, while the sum is 48.

Adding to 810430442425551 its reverse (155524244034018), we get a palindrome (965954686459569).

The spelling of 810430442425551 in words is "eight hundred ten trillion, four hundred thirty billion, four hundred forty-two million, four hundred twenty-five thousand, five hundred fifty-one".