21154663060498 has 16 divisors (see below), whose sum is σ = 34617832822944. Its totient is φ = 9615447200160.

The previous prime is 21154663060483. The next prime is 21154663060543. The reversal of 21154663060498 is 89406036645112.

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, 14735340 + ... + 16107127.

It is an arithmetic number, because the mean of its divisors is an integer number (2163614551434).

Almost surely, 2^{21154663060498} is an apocalyptic number.

21154663060498 is a deficient number, since it is larger than the sum of its proper divisors (13463169762446).

21154663060498 is a wasteful number, since it uses less digits than its factorization.

21154663060498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30873657.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 21154663060498 in words is "twenty-one trillion, one hundred fifty-four billion, six hundred sixty-three million, sixty thousand, four hundred ninety-eight".