55077601813 has 4 divisors (see below), whose sum is σ = 59314340428. Its totient is φ = 50840863200.

The previous prime is 55077601801. The next prime is 55077601819. The reversal of 55077601813 is 31810677055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2188181284 + 52889420529 = 46778^2 + 229977^2 .

It is a cyclic number.

It is not a de Polignac number, because 55077601813 - 2¹³ = 55077593621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55077601813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55077601819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118369288 + ... + 2118369313.

It is an arithmetic number, because the mean of its divisors is an integer number (14828585107).

Almost surely, 2^55077601813 is an apocalyptic number.

It is an amenable number.

55077601813 is a deficient number, since it is larger than the sum of its proper divisors (4236738615).

55077601813 is a wasteful number, since it uses less digits than its factorization.

55077601813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236738614.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 55077601813 in words is "fifty-five billion, seventy-seven million, six hundred one thousand, eight hundred thirteen".