64557511260 has 48 divisors (see below), whose sum is σ = 197193854592. Its totient is φ = 15650305600.

The previous prime is 64557511201. The next prime is 64557511283. The reversal of 64557511260 is 6211575546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48906546 + ... + 48907865.

It is an arithmetic number, because the mean of its divisors is an integer number (4108205304).

Almost surely, 2^64557511260 is an apocalyptic number.

64557511260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64557511260 is an abundant number, since it is smaller than the sum of its proper divisors (132636343332).

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

64557511260 is a wasteful number, since it uses less digits than its factorization.

64557511260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97814434 (or 97814432 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 64557511260 in words is "sixty-four billion, five hundred fifty-seven million, five hundred eleven thousand, two hundred sixty".