21626202666352 has 10 divisors (see below), whose sum is σ = 41900767666088. Its totient is φ = 10813101333168.

The previous prime is 21626202666329. The next prime is 21626202666359. The reversal of 21626202666352 is 25366620262612.

It is a super-2 number, since 2×21626202666352² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21626202666296 and 21626202666305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21626202666359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675818833308 + ... + 675818833339.

Almost surely, 2^{21626202666352} is an apocalyptic number.

It is an amenable number.

21626202666352 is a deficient number, since it is larger than the sum of its proper divisors (20274564999736).

21626202666352 is a wasteful number, since it uses less digits than its factorization.

21626202666352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351637666655 (or 1351637666649 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 21626202666352 in words is "twenty-one trillion, six hundred twenty-six billion, two hundred two million, six hundred sixty-six thousand, three hundred fifty-two".