21073474151 has 2 divisors, whose sum is σ = 21073474152. Its totient is φ = 21073474150.

The previous prime is 21073474139. The next prime is 21073474153. The reversal of 21073474151 is 15147437012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21073474151 is a prime.

Together with 21073474153, 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 (21073474153) 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, 10536737075 + 10536737076.

It is an arithmetic number, because the mean of its divisors is an integer number (10536737076).

Almost surely, 2^21073474151 is an apocalyptic number.

21073474151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21073474151 is an equidigital number, since it uses as much as digits as its factorization.

21073474151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 21073474151 in words is "twenty-one billion, seventy-three million, four hundred seventy-four thousand, one hundred fifty-one".