51380495535 has 16 divisors (see below), whose sum is σ = 84120626304. Its totient is φ = 26765653152.

The previous prime is 51380495531. The next prime is 51380495561. The reversal of 51380495535 is 53559408315.

It is a happy number.

It is not a de Polignac number, because 51380495535 - 2² = 51380495531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51380495531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39829197 + ... + 39830486.

It is an arithmetic number, because the mean of its divisors is an integer number (5257539144).

Almost surely, 2^51380495535 is an apocalyptic number.

51380495535 is a deficient number, since it is larger than the sum of its proper divisors (32740130769).

51380495535 is a wasteful number, since it uses less digits than its factorization.

51380495535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79659734.

The product of its (nonzero) digits is 1620000, while the sum is 48.

The spelling of 51380495535 in words is "fifty-one billion, three hundred eighty million, four hundred ninety-five thousand, five hundred thirty-five".