51858774562 has 24 divisors (see below), whose sum is σ = 91064655324. Its totient is φ = 22083620832.

The previous prime is 51858774557. The next prime is 51858774571. The reversal of 51858774562 is 26547785815.

It can be written as a sum of positive squares in 2 ways, for example, as 49541411241 + 2317363321 = 222579^2 + 48139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51858774497 and 51858774506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1669873 + ... + 1700644.

Almost surely, 2^51858774562 is an apocalyptic number.

51858774562 is a deficient number, since it is larger than the sum of its proper divisors (39205880762).

51858774562 is a wasteful number, since it uses less digits than its factorization.

51858774562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370690 (or 3370683 counting only the distinct ones).

The product of its digits is 18816000, while the sum is 58.

The spelling of 51858774562 in words is "fifty-one billion, eight hundred fifty-eight million, seven hundred seventy-four thousand, five hundred sixty-two".