21734057721362 has 16 divisors (see below), whose sum is σ = 37258457967360. Its totient is φ = 9314577840768.

The previous prime is 21734057721361. The next prime is 21734057721407. The reversal of 21734057721362 is 26312775043712.

It is a super-2 number, since 2×21734057721362² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21734057721362.

It is not an unprimeable number, because it can be changed into a prime (21734057721361) 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, 7812743 + ... + 10222869.

It is an arithmetic number, because the mean of its divisors is an integer number (2328653622960).

Almost surely, 2^{21734057721362} is an apocalyptic number.

21734057721362 is a deficient number, since it is larger than the sum of its proper divisors (15524400245998).

21734057721362 is a wasteful number, since it uses less digits than its factorization.

21734057721362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054265.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 21734057721362 in words is "twenty-one trillion, seven hundred thirty-four billion, fifty-seven million, seven hundred twenty-one thousand, three hundred sixty-two".