51363418258 has 4 divisors (see below), whose sum is σ = 77045127390. Its totient is φ = 25681709128.

The previous prime is 51363418217. The next prime is 51363418273. The reversal of 51363418258 is 85281436315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50232912129 + 1130506129 = 224127^2 + 33623^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12840854563 + ... + 12840854566.

Almost surely, 2^51363418258 is an apocalyptic number.

51363418258 is a deficient number, since it is larger than the sum of its proper divisors (25681709132).

51363418258 is a wasteful number, since it uses less digits than its factorization.

51363418258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25681709131.

The product of its digits is 691200, while the sum is 46.

The spelling of 51363418258 in words is "fifty-one billion, three hundred sixty-three million, four hundred eighteen thousand, two hundred fifty-eight".