21394499449312 has 24 divisors (see below), whose sum is σ = 45949549954392. Its totient is φ = 9724772476800.

The previous prime is 21394499449307. The next prime is 21394499449363.

21394499449312 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21394499449312² (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 3 ways as a sum of consecutive naturals, for example, 30389913639 + ... + 30389914342.

It is an arithmetic number, because the mean of its divisors is an integer number (1914564581433).

Almost surely, 2^{21394499449312} is an apocalyptic number.

21394499449312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21394499449312 is an abundant number, since it is smaller than the sum of its proper divisors (24555050505080).

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

21394499449312 is a wasteful number, since it uses less digits than its factorization.

21394499449312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60779828002 (or 60779827994 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 64.

The spelling of 21394499449312 in words is "twenty-one trillion, three hundred ninety-four billion, four hundred ninety-nine million, four hundred forty-nine thousand, three hundred twelve".