21472652155252 has 48 divisors (see below), whose sum is σ = 37928907072000. Its totient is φ = 10636319184480.

The previous prime is 21472652155249. The next prime is 21472652155277. The reversal of 21472652155252 is 25255125627412.

It is a super-2 number, since 2×21472652155252² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21472652155196 and 21472652155205.

It is a congruent number.

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, 331525023 + ... + 331589785.

It is an arithmetic number, because the mean of its divisors is an integer number (790185564000).

Almost surely, 2^{21472652155252} is an apocalyptic number.

It is an amenable number.

21472652155252 is a deficient number, since it is larger than the sum of its proper divisors (16456254916748).

21472652155252 is a wasteful number, since it uses less digits than its factorization.

21472652155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66676 (or 66674 counting only the distinct ones).

The product of its digits is 3360000, while the sum is 49.

The spelling of 21472652155252 in words is "twenty-one trillion, four hundred seventy-two billion, six hundred fifty-two million, one hundred fifty-five thousand, two hundred fifty-two".