55783347761233 has 4 divisors (see below), whose sum is σ = 55846665977508. Its totient is φ = 55720029544960.

The previous prime is 55783347761131. The next prime is 55783347761387. The reversal of 55783347761233 is 33216774338755.

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 31302939579409 + 24480408181824 = 5594903^2 + 4947768^2 .

It is a cyclic number.

It is not a de Polignac number, because 55783347761233 - 2³⁷ = 55645908807761 is a prime.

It is a super-2 number, since 2×55783347761233² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55783347761033) 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, 31659106816 + ... + 31659108577.

It is an arithmetic number, because the mean of its divisors is an integer number (13961666494377).

Almost surely, 2^{55783347761233} is an apocalyptic number.

It is an amenable number.

55783347761233 is a deficient number, since it is larger than the sum of its proper divisors (63318216275).

55783347761233 is an equidigital number, since it uses as much as digits as its factorization.

55783347761233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63318216274.

The product of its digits is 266716800, while the sum is 64.

The spelling of 55783347761233 in words is "fifty-five trillion, seven hundred eighty-three billion, three hundred forty-seven million, seven hundred sixty-one thousand, two hundred thirty-three".