5255278721064 has 64 divisors (see below), whose sum is σ = 14845420152000. Its totient is φ = 1722068729280.

The previous prime is 5255278721059. The next prime is 5255278721083. The reversal of 5255278721064 is 4601278725525.

It is a happy number.

5255278721064 is a `hidden beast` number, since 5 + 2 + 5 + 527 + 8 + 7 + 2 + 106 + 4 = 666.

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

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

It is a self number, because there is not a number n which added to its sum of digits gives 5255278721064.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206173647 + ... + 206199134.

It is an arithmetic number, because the mean of its divisors is an integer number (231959689875).

Almost surely, 2^{5255278721064} is an apocalyptic number.

5255278721064 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

5255278721064 is an abundant number, since it is smaller than the sum of its proper divisors (9590141430936).

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

5255278721064 is a wasteful number, since it uses less digits than its factorization.

5255278721064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412372855 (or 412372845 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 5255278721064 in words is "five trillion, two hundred fifty-five billion, two hundred seventy-eight million, seven hundred twenty-one thousand, sixty-four".