20454376351 has 2 divisors, whose sum is σ = 20454376352. Its totient is φ = 20454376350.

The previous prime is 20454376303. The next prime is 20454376363. The reversal of 20454376351 is 15367345402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20454376351 - 2⁹ = 20454375839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20454376381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227188175 + 10227188176.

It is an arithmetic number, because the mean of its divisors is an integer number (10227188176).

Almost surely, 2^20454376351 is an apocalyptic number.

20454376351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20454376351 is an equidigital number, since it uses as much as digits as its factorization.

20454376351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 20454376351 in words is "twenty billion, four hundred fifty-four million, three hundred seventy-six thousand, three hundred fifty-one".