21487016202 has 16 divisors (see below), whose sum is σ = 43073284800. Its totient is φ = 7145796672.

The previous prime is 21487016183. The next prime is 21487016209. The reversal of 21487016202 is 20261078412.

It is not an unprimeable number, because it can be changed into a prime (21487016209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132702 + ... + 4137897.

It is an arithmetic number, because the mean of its divisors is an integer number (2692080300).

Almost surely, 2^21487016202 is an apocalyptic number.

21487016202 is an abundant number, since it is smaller than the sum of its proper divisors (21586268598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21487016202 is a wasteful number, since it uses less digits than its factorization.

21487016202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271037.

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 21487016202 in words is "twenty-one billion, four hundred eighty-seven million, sixteen thousand, two hundred two".