51134440142 has 8 divisors (see below), whose sum is σ = 77091009336. Its totient is φ = 25437437032.

The previous prime is 51134440111. The next prime is 51134440183. The reversal of 51134440142 is 24104443115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51134440142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64891028 + ... + 64891815.

It is an arithmetic number, because the mean of its divisors is an integer number (9636376167).

Almost surely, 2^51134440142 is an apocalyptic number.

51134440142 is a deficient number, since it is larger than the sum of its proper divisors (25956569194).

51134440142 is a wasteful number, since it uses less digits than its factorization.

51134440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129783042.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 51134440142 its reverse (24104443115), we get a palindrome (75238883257).

The spelling of 51134440142 in words is "fifty-one billion, one hundred thirty-four million, four hundred forty thousand, one hundred forty-two".