146763776021 has 2 divisors, whose sum is σ = 146763776022. Its totient is φ = 146763776020.

The previous prime is 146763775937. The next prime is 146763776023. The reversal of 146763776021 is 120677367641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89697255025 + 57066520996 = 299495^2 + 238886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146763776021 is a prime.

Together with 146763776023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146763776023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73381888010 + 73381888011.

It is an arithmetic number, because the mean of its divisors is an integer number (73381888011).

Almost surely, 2^146763776021 is an apocalyptic number.

It is an amenable number.

146763776021 is a deficient number, since it is larger than the sum of its proper divisors (1).

146763776021 is an equidigital number, since it uses as much as digits as its factorization.

146763776021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 146763776021 in words is "one hundred forty-six billion, seven hundred sixty-three million, seven hundred seventy-six thousand, twenty-one".