51421273735 has 32 divisors (see below), whose sum is σ = 68625752832. Its totient is φ = 36741911040.

The previous prime is 51421273733. The next prime is 51421273793. The reversal of 51421273735 is 53737212415.

It is a happy number.

It is not a de Polignac number, because 51421273735 - 2¹ = 51421273733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421273733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376242 + ... + 494368.

It is an arithmetic number, because the mean of its divisors is an integer number (2144554776).

Almost surely, 2^51421273735 is an apocalyptic number.

51421273735 is a deficient number, since it is larger than the sum of its proper divisors (17204479097).

51421273735 is a wasteful number, since it uses less digits than its factorization.

51421273735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118363.

The product of its digits is 176400, while the sum is 40.

The spelling of 51421273735 in words is "fifty-one billion, four hundred twenty-one million, two hundred seventy-three thousand, seven hundred thirty-five".