21835370673352 has 8 divisors (see below), whose sum is σ = 40941320012550. Its totient is φ = 10917685336672.

The previous prime is 21835370673293. The next prime is 21835370673353. The reversal of 21835370673352 is 25337607353812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16135758760356 + 5699611912996 = 4016934^2 + 2387386^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21835370673293 and 21835370673302.

It is not an unprimeable number, because it can be changed into a prime (21835370673353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364710667077 + ... + 1364710667092.

Almost surely, 2^{21835370673352} is an apocalyptic number.

It is an amenable number.

21835370673352 is a deficient number, since it is larger than the sum of its proper divisors (19105949339198).

21835370673352 is a wasteful number, since it uses less digits than its factorization.

21835370673352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729421334175 (or 2729421334171 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 55.

The spelling of 21835370673352 in words is "twenty-one trillion, eight hundred thirty-five billion, three hundred seventy million, six hundred seventy-three thousand, three hundred fifty-two".