55576576989 has 12 divisors (see below), whose sum is σ = 80816053500. Its totient is φ = 36802385664.

The previous prime is 55576576973. The next prime is 55576577003. The reversal of 55576576989 is 98967567555.

It is a happy number.

55576576989 is a `hidden beast` number, since 5 + 557 + 6 + 5 + 7 + 69 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25773733764 + 29802843225 = 160542^2 + 172635^2 .

It is not a de Polignac number, because 55576576989 - 2⁴ = 55576576973 is a prime.

It is a super-2 number, since 2×55576576989² (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 (55576576189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20720724 + ... + 20723405.

It is an arithmetic number, because the mean of its divisors is an integer number (6734671125).

Almost surely, 2^55576576989 is an apocalyptic number.

It is an amenable number.

55576576989 is a deficient number, since it is larger than the sum of its proper divisors (25239476511).

55576576989 is a wasteful number, since it uses less digits than its factorization.

55576576989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41444284 (or 41444281 counting only the distinct ones).

The product of its digits is 714420000, while the sum is 72.

The spelling of 55576576989 in words is "fifty-five billion, five hundred seventy-six million, five hundred seventy-six thousand, nine hundred eighty-nine".