51318509026 has 8 divisors (see below), whose sum is σ = 77251706604. Its totient is φ = 25567940160.

The previous prime is 51318509017. The next prime is 51318509027. The reversal of 51318509026 is 62090581315.

It can be written as a sum of positive squares in 2 ways, for example, as 41928705225 + 9389803801 = 204765^2 + 96901^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51318509026.

It is not an unprimeable number, because it can be changed into a prime (51318509027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45656475 + ... + 45657598.

Almost surely, 2^51318509026 is an apocalyptic number.

51318509026 is a deficient number, since it is larger than the sum of its proper divisors (25933197578).

51318509026 is a wasteful number, since it uses less digits than its factorization.

51318509026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91314356.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 51318509026 in words is "fifty-one billion, three hundred eighteen million, five hundred nine thousand, twenty-six".