64871620284 has 24 divisors (see below), whose sum is σ = 151502657488. Its totient is φ = 21604510080.

The previous prime is 64871620249. The next prime is 64871620337. The reversal of 64871620284 is 48202617846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2406457 + ... + 2433264.

Almost surely, 2^64871620284 is an apocalyptic number.

It is an amenable number.

64871620284 is an abundant number, since it is smaller than the sum of its proper divisors (86631037204).

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

64871620284 is a wasteful number, since it uses less digits than its factorization.

64871620284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840845 (or 4840843 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 64871620284 in words is "sixty-four billion, eight hundred seventy-one million, six hundred twenty thousand, two hundred eighty-four".