51355654321142 has 32 divisors (see below), whose sum is σ = 79208436220704. Its totient is φ = 24957713203200.

The previous prime is 51355654321117. The next prime is 51355654321159. The reversal of 51355654321142 is 24112345655315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22951853 + ... + 25089815.

It is an arithmetic number, because the mean of its divisors is an integer number (2475263631897).

Almost surely, 2^{51355654321142} is an apocalyptic number.

51355654321142 is a deficient number, since it is larger than the sum of its proper divisors (27852781899562).

51355654321142 is a wasteful number, since it uses less digits than its factorization.

51355654321142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139104.

The product of its digits is 2160000, while the sum is 47.

Adding to 51355654321142 its reverse (24112345655315), we get a palindrome (75467999976457).

The spelling of 51355654321142 in words is "fifty-one trillion, three hundred fifty-five billion, six hundred fifty-four million, three hundred twenty-one thousand, one hundred forty-two".