21037452698 has 16 divisors (see below), whose sum is σ = 32495733600. Its totient is φ = 10208658096.

The previous prime is 21037452691. The next prime is 21037452727. The reversal of 21037452698 is 89625473012.

It is not an unprimeable number, because it can be changed into a prime (21037452691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765548 + ... + 792551.

It is an arithmetic number, because the mean of its divisors is an integer number (2030983350).

It is a 1-persistent number, because it is pandigital, but 2⋅21037452698 = 42074905396 is not.

Almost surely, 2^21037452698 is an apocalyptic number.

21037452698 is a deficient number, since it is larger than the sum of its proper divisors (11458280902).

21037452698 is a wasteful number, since it uses less digits than its factorization.

21037452698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558301.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 21037452698 in words is "twenty-one billion, thirty-seven million, four hundred fifty-two thousand, six hundred ninety-eight".