64281885399 has 12 divisors (see below), whose sum is σ = 92871688000. Its totient is φ = 42845324544.

The previous prime is 64281885397. The next prime is 64281885407. The reversal of 64281885399 is 99358818246.

64281885399 is a `hidden beast` number, since 64 + 2 + 8 + 188 + 5 + 399 = 666.

It is not a de Polignac number, because 64281885399 - 2¹ = 64281885397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64281885391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 728074 + ... + 811575.

Almost surely, 2^64281885399 is an apocalyptic number.

64281885399 is a deficient number, since it is larger than the sum of its proper divisors (28589802601).

64281885399 is a wasteful number, since it uses less digits than its factorization.

64281885399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544294 (or 1544291 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 64281885399 in words is "sixty-four billion, two hundred eighty-one million, eight hundred eighty-five thousand, three hundred ninety-nine".