215435121198 has 32 divisors (see below), whose sum is σ = 470167528320. Its totient is φ = 65265694560.

The previous prime is 215435121157. The next prime is 215435121203. The reversal of 215435121198 is 891121534512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195240 + ... + 684827.

It is an arithmetic number, because the mean of its divisors is an integer number (14692735260).

Almost surely, 2^215435121198 is an apocalyptic number.

215435121198 is an abundant number, since it is smaller than the sum of its proper divisors (254732407122).

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

215435121198 is a wasteful number, since it uses less digits than its factorization.

215435121198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883792.

The product of its digits is 86400, while the sum is 42.

It can be divided in two parts, 215435 and 121198, that added together give a palindrome (336633).

The spelling of 215435121198 in words is "two hundred fifteen billion, four hundred thirty-five million, one hundred twenty-one thousand, one hundred ninety-eight".