11421764898 has 32 divisors (see below), whose sum is σ = 23638564800. Its totient is φ = 3674830656.

The previous prime is 11421764873. The next prime is 11421764917. The reversal of 11421764898 is 89846712411.

It is a self number, because there is not a number n which added to its sum of digits gives 11421764898.

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, 691140 + ... + 707472.

It is an arithmetic number, because the mean of its divisors is an integer number (738705150).

Almost surely, 2^11421764898 is an apocalyptic number.

11421764898 is an abundant number, since it is smaller than the sum of its proper divisors (12216799902).

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

11421764898 is a wasteful number, since it uses less digits than its factorization.

11421764898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20386.

The product of its digits is 774144, while the sum is 51.

The spelling of 11421764898 in words is "eleven billion, four hundred twenty-one million, seven hundred sixty-four thousand, eight hundred ninety-eight".