21477314403071 has 2 divisors, whose sum is σ = 21477314403072. Its totient is φ = 21477314403070.

The previous prime is 21477314402983. The next prime is 21477314403073. The reversal of 21477314403071 is 17030441377412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21477314403071 is a prime.

It is a super-2 number, since 2×21477314403071² (a number of 27 digits) contains 22 as substring.

Together with 21477314403073, 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 (21477314403073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738657201535 + 10738657201536.

It is an arithmetic number, because the mean of its divisors is an integer number (10738657201536).

Almost surely, 2^{21477314403071} is an apocalyptic number.

21477314403071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21477314403071 is an equidigital number, since it uses as much as digits as its factorization.

21477314403071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 44.

The spelling of 21477314403071 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, four hundred three thousand, seventy-one".