55678134469 has 4 divisors (see below), whose sum is σ = 55678644460. Its totient is φ = 55677624480.

The previous prime is 55678134433. The next prime is 55678134497. The reversal of 55678134469 is 96443187655.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35839411969 + 19838722500 = 189313^2 + 140850^2 .

It is a cyclic number.

It is not a de Polignac number, because 55678134469 - 2¹¹ = 55678132421 is a prime.

It is a super-2 number, since 2×55678134469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55678134569) 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, 17502 + ... + 334159.

It is an arithmetic number, because the mean of its divisors is an integer number (13919661115).

Almost surely, 2^55678134469 is an apocalyptic number.

It is an amenable number.

55678134469 is a deficient number, since it is larger than the sum of its proper divisors (509991).

55678134469 is a wasteful number, since it uses less digits than its factorization.

55678134469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509990.

The product of its digits is 21772800, while the sum is 58.

The spelling of 55678134469 in words is "fifty-five billion, six hundred seventy-eight million, one hundred thirty-four thousand, four hundred sixty-nine".