218098430690 has 32 divisors (see below), whose sum is σ = 457124912640. Its totient is φ = 73365724224.

The previous prime is 218098430677. The next prime is 218098430699. The reversal of 218098430690 is 96034890812.

It is a happy number.

It is a super-2 number, since 2×218098430690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218098430699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29389610 + ... + 29397029.

It is an arithmetic number, because the mean of its divisors is an integer number (14285153520).

Almost surely, 2^218098430690 is an apocalyptic number.

218098430690 is an abundant number, since it is smaller than the sum of its proper divisors (239026481950).

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

218098430690 is a wasteful number, since it uses less digits than its factorization.

218098430690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58786706.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 218098430690 in words is "two hundred eighteen billion, ninety-eight million, four hundred thirty thousand, six hundred ninety".