21374331761512 has 32 divisors (see below), whose sum is σ = 41436724389120. Its totient is φ = 10325656091520.

The previous prime is 21374331761491. The next prime is 21374331761521. The reversal of 21374331761512 is 21516713347312.

It is a super-2 number, since 2×21374331761512² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69690438 + ... + 69996469.

It is an arithmetic number, because the mean of its divisors is an integer number (1294897637160).

Almost surely, 2^{21374331761512} is an apocalyptic number.

It is an amenable number.

21374331761512 is a deficient number, since it is larger than the sum of its proper divisors (20062392627608).

21374331761512 is a wasteful number, since it uses less digits than its factorization.

21374331761512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139687561 (or 139687557 counting only the distinct ones).

The product of its digits is 635040, while the sum is 46.

The spelling of 21374331761512 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-one million, seven hundred sixty-one thousand, five hundred twelve".