202121946463 has 2 divisors, whose sum is σ = 202121946464. Its totient is φ = 202121946462.

The previous prime is 202121946457. The next prime is 202121946473. The reversal of 202121946463 is 364649121202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202121946463 - 2⁹ = 202121945951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202121946473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060973231 + 101060973232.

It is an arithmetic number, because the mean of its divisors is an integer number (101060973232).

Almost surely, 2^202121946463 is an apocalyptic number.

202121946463 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121946463 is an equidigital number, since it uses as much as digits as its factorization.

202121946463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 202121946463 in words is "two hundred two billion, one hundred twenty-one million, nine hundred forty-six thousand, four hundred sixty-three".