20345030456671 has 2 divisors, whose sum is σ = 20345030456672. Its totient is φ = 20345030456670.

The previous prime is 20345030456627. The next prime is 20345030456687. The reversal of 20345030456671 is 17665403054302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20345030456671 - 2¹⁵ = 20345030423903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20345030456371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172515228335 + 10172515228336.

It is an arithmetic number, because the mean of its divisors is an integer number (10172515228336).

Almost surely, 2^{20345030456671} is an apocalyptic number.

20345030456671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345030456671 is an equidigital number, since it uses as much as digits as its factorization.

20345030456671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 20345030456671 in words is "twenty trillion, three hundred forty-five billion, thirty million, four hundred fifty-six thousand, six hundred seventy-one".