20654711351 has 2 divisors, whose sum is σ = 20654711352. Its totient is φ = 20654711350.

The previous prime is 20654711333. The next prime is 20654711353. The reversal of 20654711351 is 15311745602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20654711351 - 2²² = 20650517047 is a prime.

It is a Sophie Germain prime.

Together with 20654711353, 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 (20654711353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10327355675 + 10327355676.

It is an arithmetic number, because the mean of its divisors is an integer number (10327355676).

Almost surely, 2^20654711351 is an apocalyptic number.

20654711351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20654711351 is an equidigital number, since it uses as much as digits as its factorization.

20654711351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 20654711351 in words is "twenty billion, six hundred fifty-four million, seven hundred eleven thousand, three hundred fifty-one".