2188306690998 has 16 divisors (see below), whose sum is σ = 4387637601840. Its totient is φ = 727598193696.

The previous prime is 2188306690967. The next prime is 2188306691003. The reversal of 2188306690998 is 8990966038812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459339913 + ... + 459344676.

It is an arithmetic number, because the mean of its divisors is an integer number (274227350115).

Almost surely, 2^{2188306690998} is an apocalyptic number.

2188306690998 is an abundant number, since it is smaller than the sum of its proper divisors (2199330910842).

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

2188306690998 is a wasteful number, since it uses less digits than its factorization.

2188306690998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918684991.

The product of its (nonzero) digits is 80621568, while the sum is 69.

The spelling of 2188306690998 in words is "two trillion, one hundred eighty-eight billion, three hundred six million, six hundred ninety thousand, nine hundred ninety-eight".