273378405888 has 560 divisors, whose sum is σ = 985393537920. Its totient is φ = 73983725568.

The previous prime is 273378405887. The next prime is 273378405889. The reversal of 273378405888 is 888504873372.

273378405888 is a `hidden beast` number, since 2 + 7 + 3 + 3 + 7 + 8 + 40 + 588 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (273378405887) and next prime (273378405889).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273378405887) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 49639231 + ... + 49644737.

Almost surely, 2^273378405888 is an apocalyptic number.

273378405888 is a gapful number since it is divisible by the number (28) 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 273378405888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492696768960).

273378405888 is an abundant number, since it is smaller than the sum of its proper divisors (712015132032).

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

273378405888 is an frugal number, since it uses more digits than its factorization.

273378405888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569 (or 5538 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 273378405888 in words is "two hundred seventy-three billion, three hundred seventy-eight million, four hundred five thousand, eight hundred eighty-eight".