21477434331403 has 2 divisors, whose sum is σ = 21477434331404. Its totient is φ = 21477434331402.

The previous prime is 21477434331401. The next prime is 21477434331427. The reversal of 21477434331403 is 30413343477412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21477434331403 - 2¹ = 21477434331401 is a prime.

It is a super-2 number, since 2×21477434331403² (a number of 27 digits) contains 22 as substring.

Together with 21477434331401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21477434331401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738717165701 + 10738717165702.

It is an arithmetic number, because the mean of its divisors is an integer number (10738717165702).

Almost surely, 2^{21477434331403} is an apocalyptic number.

21477434331403 is a deficient number, since it is larger than the sum of its proper divisors (1).

21477434331403 is an equidigital number, since it uses as much as digits as its factorization.

21477434331403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 46.

The spelling of 21477434331403 in words is "twenty-one trillion, four hundred seventy-seven billion, four hundred thirty-four million, three hundred thirty-one thousand, four hundred three".