51858056268 has 72 divisors (see below), whose sum is σ = 133441351680. Its totient is φ = 16977673440.

The previous prime is 51858056267. The next prime is 51858056269. The reversal of 51858056268 is 86265085815.

51858056268 is a `hidden beast` number, since 5 + 1 + 8 + 5 + 8 + 0 + 5 + 626 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (51858056267) and next prime (51858056269).

It is not an unprimeable number, because it can be changed into a prime (51858056267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495471 + ... + 590937.

Almost surely, 2^51858056268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51858056268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66720675840).

51858056268 is an abundant number, since it is smaller than the sum of its proper divisors (81583295412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51858056268 is a wasteful number, since it uses less digits than its factorization.

51858056268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95747 (or 95742 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 51858056268 in words is "fifty-one billion, eight hundred fifty-eight million, fifty-six thousand, two hundred sixty-eight".