21485024698 has 4 divisors (see below), whose sum is σ = 32227537050. Its totient is φ = 10742512348.

The previous prime is 21485024689. The next prime is 21485024723. The reversal of 21485024698 is 89642058412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21300526809 + 184497889 = 145947^2 + 13583^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5371256173 + ... + 5371256176.

Almost surely, 2^21485024698 is an apocalyptic number.

21485024698 is a deficient number, since it is larger than the sum of its proper divisors (10742512352).

21485024698 is a wasteful number, since it uses less digits than its factorization.

21485024698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742512351.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 21485024698 in words is "twenty-one billion, four hundred eighty-five million, twenty-four thousand, six hundred ninety-eight".