51400351042 has 8 divisors (see below), whose sum is σ = 79759165500. Its totient is φ = 24813962544.

The previous prime is 51400351039. The next prime is 51400351061. The reversal of 51400351042 is 24015300415.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47380664241 + 4019686801 = 217671^2 + 63401^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 51400350998 and 51400351016.

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, 443106417 + ... + 443106532.

Almost surely, 2^51400351042 is an apocalyptic number.

51400351042 is a deficient number, since it is larger than the sum of its proper divisors (28358814458).

51400351042 is a wasteful number, since it uses less digits than its factorization.

51400351042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886212980.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51400351042 its reverse (24015300415), we get a palindrome (75415651457).

The spelling of 51400351042 in words is "fifty-one billion, four hundred million, three hundred fifty-one thousand, forty-two".