21418896116 has 12 divisors (see below), whose sum is σ = 37660714560. Its totient is φ = 10658691960.

The previous prime is 21418896101. The next prime is 21418896143. The reversal of 21418896116 is 61169881412.

It is a super-2 number, since 2×21418896116² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12688076 + ... + 12689763.

It is an arithmetic number, because the mean of its divisors is an integer number (3138392880).

Almost surely, 2^21418896116 is an apocalyptic number.

It is an amenable number.

21418896116 is a deficient number, since it is larger than the sum of its proper divisors (16241818444).

21418896116 is a wasteful number, since it uses less digits than its factorization.

21418896116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25378054 (or 25378052 counting only the distinct ones).

The product of its digits is 165888, while the sum is 47.

The spelling of 21418896116 in words is "twenty-one billion, four hundred eighteen million, eight hundred ninety-six thousand, one hundred sixteen".