281361023964 has 36 divisors (see below), whose sum is σ = 711292776376. Its totient is φ = 93777166368.

The previous prime is 281361023941. The next prime is 281361024029. The reversal of 281361023964 is 469320163182.

281361023964 is a `hidden beast` number, since 2 + 8 + 1 + 3 + 610 + 23 + 9 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58099 + ... + 752394.

Almost surely, 2^281361023964 is an apocalyptic number.

It is an amenable number.

281361023964 is an abundant number, since it is smaller than the sum of its proper divisors (429931752412).

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

281361023964 is a wasteful number, since it uses less digits than its factorization.

281361023964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820146 (or 820141 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 281361023964 in words is "two hundred eighty-one billion, three hundred sixty-one million, twenty-three thousand, nine hundred sixty-four".