198526420118936 has 256 divisors, whose sum is σ = 488129241600000. Its totient is φ = 75074561565696.

The previous prime is 198526420118861. The next prime is 198526420118947. The reversal of 198526420118936 is 639811024625891.

It is a congruent number.

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, 1279013300 + ... + 1279168508.

It is an arithmetic number, because the mean of its divisors is an integer number (1906754850000).

Almost surely, 2^{198526420118936} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198526420118936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244064620800000).

198526420118936 is an abundant number, since it is smaller than the sum of its proper divisors (289602821481064).

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

198526420118936 is a wasteful number, since it uses less digits than its factorization.

198526420118936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156831 (or 156813 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 65.

The spelling of 198526420118936 in words is "one hundred ninety-eight trillion, five hundred twenty-six billion, four hundred twenty million, one hundred eighteen thousand, nine hundred thirty-six".