64548831055251 has 16 divisors (see below), whose sum is σ = 88952871748608. Its totient is φ = 41592155632800.

The previous prime is 64548831055249. The next prime is 64548831055301. The reversal of 64548831055251 is 15255013884546.

It is not a de Polignac number, because 64548831055251 - 2¹ = 64548831055249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64548831055191 and 64548831055200.

It is not an unprimeable number, because it can be changed into a prime (64548831055201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435354645 + ... + 435502886.

It is an arithmetic number, because the mean of its divisors is an integer number (5559554484288).

Almost surely, 2^{64548831055251} is an apocalyptic number.

64548831055251 is a deficient number, since it is larger than the sum of its proper divisors (24404040693357).

64548831055251 is a wasteful number, since it uses less digits than its factorization.

64548831055251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870858362.

The product of its (nonzero) digits is 23040000, while the sum is 57.

The spelling of 64548831055251 in words is "sixty-four trillion, five hundred forty-eight billion, eight hundred thirty-one million, fifty-five thousand, two hundred fifty-one".