21413540002 has 8 divisors (see below), whose sum is σ = 32404560876. Its totient is φ = 10612019712.

The previous prime is 21413539969. The next prime is 21413540003. The reversal of 21413540002 is 20004531412.

It can be written as a sum of positive squares in 2 ways, for example, as 18525659881 + 2887880121 = 136109^2 + 53739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21413540003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47374863 + ... + 47375314.

Almost surely, 2^21413540002 is an apocalyptic number.

21413540002 is a deficient number, since it is larger than the sum of its proper divisors (10991020874).

21413540002 is a wasteful number, since it uses less digits than its factorization.

21413540002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94750292.

The product of its (nonzero) digits is 960, while the sum is 22.

The spelling of 21413540002 in words is "twenty-one billion, four hundred thirteen million, five hundred forty thousand, two".