51233400136142 has 32 divisors (see below), whose sum is σ = 94124279204352. Its totient is φ = 20434876396704.

The previous prime is 51233400136129. The next prime is 51233400136147. The reversal of 51233400136142 is 24163100433215.

It is a super-2 number, since 2×51233400136142² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51233400136147) 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, 2150122388 + ... + 2150146215.

It is an arithmetic number, because the mean of its divisors is an integer number (2941383725136).

Almost surely, 2^{51233400136142} is an apocalyptic number.

51233400136142 is a deficient number, since it is larger than the sum of its proper divisors (42890879068210).

51233400136142 is a wasteful number, since it uses less digits than its factorization.

51233400136142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300268672.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 51233400136142 its reverse (24163100433215), we get a palindrome (75396500569357).

The spelling of 51233400136142 in words is "fifty-one trillion, two hundred thirty-three billion, four hundred million, one hundred thirty-six thousand, one hundred forty-two".