51084865458 has 64 divisors (see below), whose sum is σ = 126178819200. Its totient is φ = 15188172480.

The previous prime is 51084865427. The next prime is 51084865459. The reversal of 51084865458 is 85456848015.

51084865458 is a `hidden beast` number, since 5 + 10 + 8 + 4 + 86 + 545 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (51084865459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779853 + ... + 842816.

It is an arithmetic number, because the mean of its divisors is an integer number (1971544050).

Almost surely, 2^51084865458 is an apocalyptic number.

51084865458 is an abundant number, since it is smaller than the sum of its proper divisors (75093953742).

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

51084865458 is a wasteful number, since it uses less digits than its factorization.

51084865458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622744 (or 1622738 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 54.

The spelling of 51084865458 in words is "fifty-one billion, eighty-four million, eight hundred sixty-five thousand, four hundred fifty-eight".