21536103862 has 32 divisors (see below), whose sum is σ = 40352401152. Its totient is φ = 8392611744.

The previous prime is 21536103839. The next prime is 21536103871. The reversal of 21536103862 is 26830163512.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 870868 + ... + 895255.

It is an arithmetic number, because the mean of its divisors is an integer number (1261012536).

Almost surely, 2^21536103862 is an apocalyptic number.

21536103862 is a deficient number, since it is larger than the sum of its proper divisors (18816297290).

21536103862 is a wasteful number, since it uses less digits than its factorization.

21536103862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766212.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 21536103862 in words is "twenty-one billion, five hundred thirty-six million, one hundred three thousand, eight hundred sixty-two".