273849385821 has 16 divisors (see below), whose sum is σ = 398392650048. Its totient is φ = 165941712000.

The previous prime is 273849385793. The next prime is 273849385829. The reversal of 273849385821 is 128583948372.

It is not a de Polignac number, because 273849385821 - 2¹³ = 273849377629 is a prime.

It is a super-2 number, since 2×273849385821² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273849385829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488080 + ... + 886521.

It is an arithmetic number, because the mean of its divisors is an integer number (24899540628).

Almost surely, 2^273849385821 is an apocalyptic number.

It is an amenable number.

273849385821 is a deficient number, since it is larger than the sum of its proper divisors (124543264227).

273849385821 is a wasteful number, since it uses less digits than its factorization.

273849385821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380652.

The product of its digits is 23224320, while the sum is 60.

The spelling of 273849385821 in words is "two hundred seventy-three billion, eight hundred forty-nine million, three hundred eighty-five thousand, eight hundred twenty-one".