55779427449 has 6 divisors (see below), whose sum is σ = 80570284106. Its totient is φ = 37186284960.

The previous prime is 55779427433. The next prime is 55779427507. The reversal of 55779427449 is 94472497755.

55779427449 is a `hidden beast` number, since 557 + 7 + 9 + 4 + 2 + 74 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53972582400 + 1806845049 = 232320^2 + 42507^2 .

It is not a de Polignac number, because 55779427449 - 2⁴ = 55779427433 is a prime.

It is a super-2 number, since 2×55779427449² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55779427409) 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, 3098857072 + ... + 3098857089.

Almost surely, 2^55779427449 is an apocalyptic number.

It is an amenable number.

55779427449 is a deficient number, since it is larger than the sum of its proper divisors (24790856657).

55779427449 is a wasteful number, since it uses less digits than its factorization.

55779427449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6197714167 (or 6197714164 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 63.

The spelling of 55779427449 in words is "fifty-five billion, seven hundred seventy-nine million, four hundred twenty-seven thousand, four hundred forty-nine".