21412641516 has 72 divisors (see below), whose sum is σ = 61538880816. Its totient is φ = 5758018560.

The previous prime is 21412641511. The next prime is 21412641553. The reversal of 21412641516 is 61514621412.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21412641511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061065 + ... + 1081056.

It is an arithmetic number, because the mean of its divisors is an integer number (854706678).

Almost surely, 2^21412641516 is an apocalyptic number.

It is an amenable number.

21412641516 is an abundant number, since it is smaller than the sum of its proper divisors (40126239300).

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

21412641516 is a wasteful number, since it uses less digits than its factorization.

21412641516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142159 (or 2142150 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The spelling of 21412641516 in words is "twenty-one billion, four hundred twelve million, six hundred forty-one thousand, five hundred sixteen".