51858467280 has 60 divisors (see below), whose sum is σ = 174158021700. Its totient is φ = 13828924416.

The previous prime is 51858467267. The next prime is 51858467293. The reversal of 51858467280 is 8276485815.

51858467280 is a `hidden beast` number, since 51 + 8 + 58 + 467 + 2 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (51858467267) and next prime (51858467293).

It can be written as a sum of positive squares in 2 ways, for example, as 33801557904 + 18056909376 = 183852^2 + 134376^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36012105 + ... + 36013544.

It is an arithmetic number, because the mean of its divisors is an integer number (2902633695).

Almost surely, 2^51858467280 is an apocalyptic number.

It is an amenable number.

51858467280 is an abundant number, since it is smaller than the sum of its proper divisors (122299554420).

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

51858467280 is a wasteful number, since it uses less digits than its factorization.

51858467280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72025668 (or 72025659 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 51858467280 in words is "fifty-one billion, eight hundred fifty-eight million, four hundred sixty-seven thousand, two hundred eighty".