51442430403 has 32 divisors (see below), whose sum is σ = 88861427200. Its totient is φ = 25706336256.

The previous prime is 51442430401. The next prime is 51442430437. The reversal of 51442430403 is 30403424415.

It is not a de Polignac number, because 51442430403 - 2¹ = 51442430401 is a prime.

It is a super-3 number, since 3×51442430403³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51442430401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4953598 + ... + 4963971.

It is an arithmetic number, because the mean of its divisors is an integer number (2776919600).

Almost surely, 2^51442430403 is an apocalyptic number.

51442430403 is a deficient number, since it is larger than the sum of its proper divisors (37418996797).

51442430403 is a wasteful number, since it uses less digits than its factorization.

51442430403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917611.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 51442430403 its reverse (30403424415), we get a palindrome (81845854818).

The spelling of 51442430403 in words is "fifty-one billion, four hundred forty-two million, four hundred thirty thousand, four hundred three".