21647170467052 has 24 divisors (see below), whose sum is σ = 40947131446592. Its totient is φ = 9954134582400.

The previous prime is 21647170467047. The next prime is 21647170467053. The reversal of 21647170467052 is 25076407174612.

It is a super-3 number, since 3×21647170467052³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (21647170467053) 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, 768051849 + ... + 768080032.

Almost surely, 2^{21647170467052} is an apocalyptic number.

It is an amenable number.

21647170467052 is a deficient number, since it is larger than the sum of its proper divisors (19299960979540).

21647170467052 is a wasteful number, since it uses less digits than its factorization.

21647170467052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536132169 (or 1536132167 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 21647170467052 in words is "twenty-one trillion, six hundred forty-seven billion, one hundred seventy million, four hundred sixty-seven thousand, fifty-two".