281613481362816 has 64 divisors (see below), whose sum is σ = 768252993959280. Its totient is φ = 91334102059008.

The previous prime is 281613481362797. The next prime is 281613481362827. The reversal of 281613481362816 is 618263184316182.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×281613481362816² (a number of 30 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 281613481362816.

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, 9910370131 + ... + 9910398546.

Almost surely, 2^{281613481362816} is an apocalyptic number.

It is an amenable number.

281613481362816 is an abundant number, since it is smaller than the sum of its proper divisors (486639512596464).

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

281613481362816 is a wasteful number, since it uses less digits than its factorization.

281613481362816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19820768731 (or 19820768719 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 60.

The spelling of 281613481362816 in words is "two hundred eighty-one trillion, six hundred thirteen billion, four hundred eighty-one million, three hundred sixty-two thousand, eight hundred sixteen".