20146750720331 has 2 divisors, whose sum is σ = 20146750720332. Its totient is φ = 20146750720330.

The previous prime is 20146750720321. The next prime is 20146750720381. The reversal of 20146750720331 is 13302705764102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20146750720331 is a prime.

It is a super-2 number, since 2×20146750720331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20146750720321) 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, 10073375360165 + 10073375360166.

It is an arithmetic number, because the mean of its divisors is an integer number (10073375360166).

Almost surely, 2^{20146750720331} is an apocalyptic number.

20146750720331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146750720331 is an equidigital number, since it uses as much as digits as its factorization.

20146750720331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 20146750720331 in words is "twenty trillion, one hundred forty-six billion, seven hundred fifty million, seven hundred twenty thousand, three hundred thirty-one".