21470127767752 has 64 divisors (see below), whose sum is σ = 41291632166400. Its totient is φ = 10459708277760.

The previous prime is 21470127767729. The next prime is 21470127767779. The reversal of 21470127767752 is 25776772107412.

It is a super-2 number, since 2×21470127767752² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1851984868 + ... + 1851996460.

It is an arithmetic number, because the mean of its divisors is an integer number (645181752600).

Almost surely, 2^{21470127767752} is an apocalyptic number.

It is an amenable number.

21470127767752 is a deficient number, since it is larger than the sum of its proper divisors (19821504398648).

21470127767752 is a wasteful number, since it uses less digits than its factorization.

21470127767752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18446 (or 18442 counting only the distinct ones).

The product of its (nonzero) digits is 16134720, while the sum is 58.

The spelling of 21470127767752 in words is "twenty-one trillion, four hundred seventy billion, one hundred twenty-seven million, seven hundred sixty-seven thousand, seven hundred fifty-two".