21734467651216 has 40 divisors (see below), whose sum is σ = 44327297777120. Its totient is φ = 10295175914496.

The previous prime is 21734467651213. The next prime is 21734467651297. The reversal of 21734467651216 is 61215676443712.

It is not an unprimeable number, because it can be changed into a prime (21734467651213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39034711 + ... + 39587593.

It is an arithmetic number, because the mean of its divisors is an integer number (1108182444428).

Almost surely, 2^{21734467651216} is an apocalyptic number.

It is an amenable number.

21734467651216 is an abundant number, since it is smaller than the sum of its proper divisors (22592830125904).

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

21734467651216 is a wasteful number, since it uses less digits than its factorization.

21734467651216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682223 (or 682217 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 55.

The spelling of 21734467651216 in words is "twenty-one trillion, seven hundred thirty-four billion, four hundred sixty-seven million, six hundred fifty-one thousand, two hundred sixteen".