55577861064 has 96 divisors (see below), whose sum is σ = 167305694400. Its totient is φ = 16523994240.

The previous prime is 55577861063. The next prime is 55577861083. The reversal of 55577861064 is 46016877555.

It is a happy number.

55577861064 is a `hidden beast` number, since 5 + 5 + 577 + 8 + 6 + 1 + 0 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55577861064.

It is not an unprimeable number, because it can be changed into a prime (55577861063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620044 + ... + 703995.

It is an arithmetic number, because the mean of its divisors is an integer number (1742767650).

Almost surely, 2^55577861064 is an apocalyptic number.

It is an amenable number.

55577861064 is an abundant number, since it is smaller than the sum of its proper divisors (111727833336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55577861064 is a wasteful number, since it uses less digits than its factorization.

55577861064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324115 (or 1324108 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

The spelling of 55577861064 in words is "fifty-five billion, five hundred seventy-seven million, eight hundred sixty-one thousand, sixty-four".