21536629904363 has 16 divisors (see below), whose sum is σ = 25468678794240. Its totient is φ = 17828075111616.

The previous prime is 21536629904357. The next prime is 21536629904411. The reversal of 21536629904363 is 36340992663512.

It is not a de Polignac number, because 21536629904363 - 2⁴ = 21536629904347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21536629934363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401940995 + ... + 401994572.

It is an arithmetic number, because the mean of its divisors is an integer number (1591792424640).

Almost surely, 2^{21536629904363} is an apocalyptic number.

21536629904363 is a deficient number, since it is larger than the sum of its proper divisors (3932048889877).

21536629904363 is an equidigital number, since it uses as much as digits as its factorization.

21536629904363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803935706.

The product of its (nonzero) digits is 37791360, while the sum is 59.

The spelling of 21536629904363 in words is "twenty-one trillion, five hundred thirty-six billion, six hundred twenty-nine million, nine hundred four thousand, three hundred sixty-three".