55555670016 has 720 divisors, whose sum is σ = 209782198080. Its totient is φ = 14368112640.

The previous prime is 55555669987. The next prime is 55555670077. The reversal of 55555670016 is 61007655555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 238436236 + ... + 238436468.

It is an arithmetic number, because the mean of its divisors is an integer number (291364164).

Almost surely, 2^55555670016 is an apocalyptic number.

55555670016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55555670016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104891099040).

55555670016 is an abundant number, since it is smaller than the sum of its proper divisors (154226528064).

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

55555670016 is a wasteful number, since it uses less digits than its factorization.

55555670016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 787500, while the sum is 45.

The spelling of 55555670016 in words is "fifty-five billion, five hundred fifty-five million, six hundred seventy thousand, sixteen".