549755813890 has 32 divisors (see below), whose sum is σ = 996058381680. Its totient is φ = 218462552064.

The previous prime is 549755813881. The next prime is 549755813911. The reversal of 549755813890 is 98318557945.

It is a happy number.

549755813890 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 8 ways, for example, as 275951646721 + 273804167169 = 525311^2 + 523263^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783874 + ... + 1309186.

Almost surely, 2^549755813890 is an apocalyptic number.

549755813890 is a deficient number, since it is larger than the sum of its proper divisors (446302567790).

549755813890 is a wasteful number, since it uses less digits than its factorization.

549755813890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526006.

The product of its (nonzero) digits is 54432000, while the sum is 64.

The spelling of 549755813890 in words is "five hundred forty-nine billion, seven hundred fifty-five million, eight hundred thirteen thousand, eight hundred ninety".