545549690658 has 256 divisors, whose sum is σ = 1408996048896. Its totient is φ = 137220894720.

The previous prime is 545549690639. The next prime is 545549690663. The reversal of 545549690658 is 856096945545.

545549690658 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 128574285 + ... + 128578527.

It is an arithmetic number, because the mean of its divisors is an integer number (5503890816).

Almost surely, 2^545549690658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545549690658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704498024448).

545549690658 is an abundant number, since it is smaller than the sum of its proper divisors (863446358238).

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

545549690658 is a wasteful number, since it uses less digits than its factorization.

545549690658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497.

The product of its (nonzero) digits is 233280000, while the sum is 66.

The spelling of 545549690658 in words is "five hundred forty-five billion, five hundred forty-nine million, six hundred ninety thousand, six hundred fifty-eight".