21404506067272 has 32 divisors (see below), whose sum is σ = 41327561318400. Its totient is φ = 10386556355200.

The previous prime is 21404506067249. The next prime is 21404506067293. The reversal of 21404506067272 is 27276060540412.

It is a super-4 number, since 4×21404506067272⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170768872 + ... + 170894167.

It is an arithmetic number, because the mean of its divisors is an integer number (1291486291200).

Almost surely, 2^{21404506067272} is an apocalyptic number.

It is an amenable number.

21404506067272 is a deficient number, since it is larger than the sum of its proper divisors (19923055251128).

21404506067272 is a wasteful number, since it uses less digits than its factorization.

21404506067272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341663277 (or 341663273 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 21404506067272 in words is "twenty-one trillion, four hundred four billion, five hundred six million, sixty-seven thousand, two hundred seventy-two".