55678289810 has 128 divisors (see below), whose sum is σ = 120453661440. Its totient is φ = 18261734400.

The previous prime is 55678289801. The next prime is 55678289839. The reversal of 55678289810 is 1898287655.

It is a super-2 number, since 2×55678289810² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55678289810.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20386145 + ... + 20388875.

It is an arithmetic number, because the mean of its divisors is an integer number (941044230).

Almost surely, 2^55678289810 is an apocalyptic number.

55678289810 is an abundant number, since it is smaller than the sum of its proper divisors (64775371630).

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

55678289810 is a wasteful number, since it uses less digits than its factorization.

55678289810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 55678289810 in words is "fifty-five billion, six hundred seventy-eight million, two hundred eighty-nine thousand, eight hundred ten".