21150035233631 has 2 divisors, whose sum is σ = 21150035233632. Its totient is φ = 21150035233630.

The previous prime is 21150035233559. The next prime is 21150035233667. The reversal of 21150035233631 is 13633253005112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21150035233631 is a prime.

It is a super-3 number, since 3×21150035233631³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21150035233591 and 21150035233600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21150035203631) 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, 10575017616815 + 10575017616816.

It is an arithmetic number, because the mean of its divisors is an integer number (10575017616816).

Almost surely, 2^{21150035233631} is an apocalyptic number.

21150035233631 is a deficient number, since it is larger than the sum of its proper divisors (1).

21150035233631 is an equidigital number, since it uses as much as digits as its factorization.

21150035233631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 35.

Adding to 21150035233631 its reverse (13633253005112), we get a palindrome (34783288238743).

The spelling of 21150035233631 in words is "twenty-one trillion, one hundred fifty billion, thirty-five million, two hundred thirty-three thousand, six hundred thirty-one".