55555049511 has 24 divisors (see below), whose sum is σ = 86460519600. Its totient is φ = 34171284096.

The previous prime is 55555049509. The next prime is 55555049521. The reversal of 55555049511 is 11594055555.

55555049511 is a `hidden beast` number, since 5 + 5 + 5 + 550 + 4 + 95 + 1 + 1 = 666.

It is not a de Polignac number, because 55555049511 - 2¹ = 55555049509 is a prime.

It is a super-2 number, since 2×55555049511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555049521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132475 + ... + 358691.

It is an arithmetic number, because the mean of its divisors is an integer number (3602521650).

Almost surely, 2^55555049511 is an apocalyptic number.

55555049511 is a deficient number, since it is larger than the sum of its proper divisors (30905470089).

55555049511 is a wasteful number, since it uses less digits than its factorization.

55555049511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228335 (or 228332 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 45.

The spelling of 55555049511 in words is "fifty-five billion, five hundred fifty-five million, forty-nine thousand, five hundred eleven".