21433331879718 has 32 divisors (see below), whose sum is σ = 46767288729600. Its totient is φ = 6494441340960.

The previous prime is 21433331879657. The next prime is 21433331879753. The reversal of 21433331879718 is 81797813333412.

It is a super-2 number, since 2×21433331879718² (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 11841705 + ... + 13531172.

It is an arithmetic number, because the mean of its divisors is an integer number (1461477772800).

Almost surely, 2^{21433331879718} is an apocalyptic number.

21433331879718 is an abundant number, since it is smaller than the sum of its proper divisors (25333956849882).

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

21433331879718 is a wasteful number, since it uses less digits than its factorization.

21433331879718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25385692.

The product of its digits is 18289152, while the sum is 60.

The spelling of 21433331879718 in words is "twenty-one trillion, four hundred thirty-three billion, three hundred thirty-one million, eight hundred seventy-nine thousand, seven hundred eighteen".