51046431042 has 16 divisors (see below), whose sum is σ = 102172451040. Its totient is φ = 17002212192.

The previous prime is 51046431041. The next prime is 51046431047. The reversal of 51046431042 is 24013464015.

51046431042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51046431042² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51046431041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3307867 + ... + 3323262.

It is an arithmetic number, because the mean of its divisors is an integer number (6385778190).

Almost surely, 2^51046431042 is an apocalyptic number.

51046431042 is an abundant number, since it is smaller than the sum of its proper divisors (51126019998).

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

51046431042 is a wasteful number, since it uses less digits than its factorization.

51046431042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632417.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 51046431042 its reverse (24013464015), we get a palindrome (75059895057).

The spelling of 51046431042 in words is "fifty-one billion, forty-six million, four hundred thirty-one thousand, forty-two".