273816133561545 has 16 divisors (see below), whose sum is σ = 438106291138752. Its totient is φ = 146035112086080.

The previous prime is 273816133561513. The next prime is 273816133561559. The reversal of 273816133561545 is 545165331618372.

It is a happy number.

It is not a de Polignac number, because 273816133561545 - 2⁵ = 273816133561513 is a prime.

It is a super-4 number, since 4×273816133561545⁴ (a number of 59 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5000955 + ... + 23929935.

It is an arithmetic number, because the mean of its divisors is an integer number (27381643196172).

Almost surely, 2^{273816133561545} is an apocalyptic number.

It is an amenable number.

273816133561545 is a deficient number, since it is larger than the sum of its proper divisors (164290157577207).

273816133561545 is a wasteful number, since it uses less digits than its factorization.

273816133561545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19893352.

The product of its digits is 54432000, while the sum is 60.

The spelling of 273816133561545 in words is "two hundred seventy-three trillion, eight hundred sixteen billion, one hundred thirty-three million, five hundred sixty-one thousand, five hundred forty-five".