21013004414 has 16 divisors (see below), whose sum is σ = 31579273440. Its totient is φ = 10486596960.

The previous prime is 21013004387. The next prime is 21013004477. The reversal of 21013004414 is 41440031012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4320344 + ... + 4325204.

It is an arithmetic number, because the mean of its divisors is an integer number (1973704590).

Almost surely, 2^21013004414 is an apocalyptic number.

21013004414 is a deficient number, since it is larger than the sum of its proper divisors (10566269026).

21013004414 is a wasteful number, since it uses less digits than its factorization.

21013004414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8515.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21013004414 its reverse (41440031012), we get a palindrome (62453035426).

The spelling of 21013004414 in words is "twenty-one billion, thirteen million, four thousand, four hundred fourteen".