21477317530703 has 2 divisors, whose sum is σ = 21477317530704. Its totient is φ = 21477317530702.

The previous prime is 21477317530619. The next prime is 21477317530729. The reversal of 21477317530703 is 30703571377412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21477317530703 - 2²² = 21477313336399 is a prime.

It is a super-2 number, since 2×21477317530703² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21477317532703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738658765351 + 10738658765352.

It is an arithmetic number, because the mean of its divisors is an integer number (10738658765352).

Almost surely, 2^{21477317530703} is an apocalyptic number.

21477317530703 is a deficient number, since it is larger than the sum of its proper divisors (1).

21477317530703 is an equidigital number, since it uses as much as digits as its factorization.

21477317530703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2593080, while the sum is 50.

The spelling of 21477317530703 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred seventeen million, five hundred thirty thousand, seven hundred three".