64665260460 has 72 divisors (see below), whose sum is σ = 196669047120. Its totient is φ = 17198552448.

The previous prime is 64665260453. The next prime is 64665260521. The reversal of 64665260460 is 6406256646.

64665260460 is a `hidden beast` number, since 6 + 4 + 66 + 526 + 0 + 4 + 60 = 666.

64665260460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405727 + ... + 542166.

Almost surely, 2^64665260460 is an apocalyptic number.

64665260460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64665260460 is an abundant number, since it is smaller than the sum of its proper divisors (132003786660).

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

64665260460 is a wasteful number, since it uses less digits than its factorization.

64665260460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948287 (or 948282 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 64665260460 in words is "sixty-four billion, six hundred sixty-five million, two hundred sixty thousand, four hundred sixty".