64180854608 has 20 divisors (see below), whose sum is σ = 133915822068. Its totient is φ = 29621932800.

The previous prime is 64180854589. The next prime is 64180854631. The reversal of 64180854608 is 80645808146.

It can be written as a sum of positive squares in 2 ways, for example, as 35407196224 + 28773658384 = 188168^2 + 169628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154280693 + ... + 154281108.

Almost surely, 2^64180854608 is an apocalyptic number.

It is an amenable number.

64180854608 is an abundant number, since it is smaller than the sum of its proper divisors (69734967460).

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

64180854608 is a wasteful number, since it uses less digits than its factorization.

64180854608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308561822 (or 308561816 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 64180854608 in words is "sixty-four billion, one hundred eighty million, eight hundred fifty-four thousand, six hundred eight".