55505555500590 has 192 divisors, whose sum is σ = 158745834374400. Its totient is φ = 13370220536832.

The previous prime is 55505555500561. The next prime is 55505555500613. The reversal of 55505555500590 is 9500555550555.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 388652916 + ... + 388795704.

It is an arithmetic number, because the mean of its divisors is an integer number (826801220700).

Almost surely, 2^{55505555500590} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55505555500590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79372917187200).

55505555500590 is an abundant number, since it is smaller than the sum of its proper divisors (103240278873810).

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

55505555500590 is a wasteful number, since it uses less digits than its factorization.

55505555500590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149931 (or 149928 counting only the distinct ones).

The product of its (nonzero) digits is 17578125, while the sum is 54.

The spelling of 55505555500590 in words is "fifty-five trillion, five hundred five billion, five hundred fifty-five million, five hundred thousand, five hundred ninety".