273857723042 has 18 divisors (see below), whose sum is σ = 436391956497. Its totient is φ = 128868301984.

The previous prime is 273857723033. The next prime is 273857723063. The reversal of 273857723042 is 240327758372.

It can be written as a sum of positive squares in 2 ways, for example, as 250641410881 + 23216312161 = 500641^2 + 152369^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=370039.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12570443 + ... + 12592209.

Almost surely, 2^273857723042 is an apocalyptic number.

273857723042 is a deficient number, since it is larger than the sum of its proper divisors (162534233455).

273857723042 is an frugal number, since it uses more digits than its factorization.

273857723042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43570 (or 21786 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 50.

Multiplying 273857723042 by its sum of digits (50), we get a square (13692886152100 = 3700390²).

The spelling of 273857723042 in words is "two hundred seventy-three billion, eight hundred fifty-seven million, seven hundred twenty-three thousand, forty-two".