273621234816 has 192 divisors, whose sum is σ = 817101885600. Its totient is φ = 91143843840.

The previous prime is 273621234811. The next prime is 273621234853. The reversal of 273621234816 is 618432126372.

273621234816 is a `hidden beast` number, since 2 + 7 + 3 + 621 + 2 + 3 + 4 + 8 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×273621234816² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (273621234811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72750376 + ... + 72754136.

Almost surely, 2^273621234816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273621234816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408550942800).

273621234816 is an abundant number, since it is smaller than the sum of its proper divisors (543480650784).

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

273621234816 is an equidigital number, since it uses as much as digits as its factorization.

273621234816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129 (or 6105 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 273621234816 in words is "two hundred seventy-three billion, six hundred twenty-one million, two hundred thirty-four thousand, eight hundred sixteen".