55431805655169 has 6 divisors (see below), whose sum is σ = 80068163724146. Its totient is φ = 36954537103440.

The previous prime is 55431805655159. The next prime is 55431805655179. The reversal of 55431805655169 is 96155650813455.

55431805655169 is a `hidden beast` number, since 5 + 5 + 4 + 3 + 1 + 8 + 0 + 565 + 5 + 1 + 69 = 666.

It is an interprime number because it is at equal distance from previous prime (55431805655159) and next prime (55431805655179).

It can be written as a sum of positive squares in only one way, i.e., 45359053117569 + 10072752537600 = 6734913^2 + 3173760^2 .

It is not a de Polignac number, because 55431805655169 - 2¹² = 55431805651073 is a prime.

It is a super-2 number, since 2×55431805655169² (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 (55431805655119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3079544758612 + ... + 3079544758629.

Almost surely, 2^{55431805655169} is an apocalyptic number.

It is an amenable number.

55431805655169 is a deficient number, since it is larger than the sum of its proper divisors (24636358068977).

55431805655169 is a wasteful number, since it uses less digits than its factorization.

55431805655169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159089517247 (or 6159089517244 counting only the distinct ones).

The product of its (nonzero) digits is 97200000, while the sum is 63.

The spelling of 55431805655169 in words is "fifty-five trillion, four hundred thirty-one billion, eight hundred five million, six hundred fifty-five thousand, one hundred sixty-nine".