273726512640 has 960 divisors, whose sum is σ = 1164354048000. Its totient is φ = 59240595456.

The previous prime is 273726512611. The next prime is 273726512641. The reversal of 273726512640 is 46215627372.

273726512640 is a `hidden beast` number, since 2 + 7 + 3 + 72 + 6 + 512 + 64 + 0 = 666.

273726512640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (960).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273726512641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 150150769 + ... + 150152591.

It is an arithmetic number, because the mean of its divisors is an integer number (1212868800).

Almost surely, 2^273726512640 is an apocalyptic number.

273726512640 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 273726512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582177024000).

273726512640 is an abundant number, since it is smaller than the sum of its proper divisors (890627535360).

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

273726512640 is a wasteful number, since it uses less digits than its factorization.

273726512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 273726512640 in words is "two hundred seventy-three billion, seven hundred twenty-six million, five hundred twelve thousand, six hundred forty".