273486320640 has 528 divisors, whose sum is σ = 1033613817600. Its totient is φ = 66456059904.

The previous prime is 273486320633. The next prime is 273486320677. The reversal of 273486320640 is 46023684372.

273486320640 is a `hidden beast` number, since 2 + 7 + 3 + 4 + 8 + 632 + 0 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47321271 + ... + 47327049.

Almost surely, 2^273486320640 is an apocalyptic number.

273486320640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273486320640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516806908800).

273486320640 is an abundant number, since it is smaller than the sum of its proper divisors (760127496960).

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

273486320640 is a wasteful number, since it uses less digits than its factorization.

273486320640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902 (or 5881 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 273486320640 in words is "two hundred seventy-three billion, four hundred eighty-six million, three hundred twenty thousand, six hundred forty".