21477324253603 has 2 divisors, whose sum is σ = 21477324253604. Its totient is φ = 21477324253602.

The previous prime is 21477324253573. The next prime is 21477324253661. The reversal of 21477324253603 is 30635242377412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21477324253603 - 2¹³ = 21477324245411 is a prime.

It is a super-2 number, since 2×21477324253603² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21477324256603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738662126801 + 10738662126802.

It is an arithmetic number, because the mean of its divisors is an integer number (10738662126802).

Almost surely, 2^{21477324253603} is an apocalyptic number.

21477324253603 is a deficient number, since it is larger than the sum of its proper divisors (1).

21477324253603 is an equidigital number, since it uses as much as digits as its factorization.

21477324253603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 49.

The spelling of 21477324253603 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred twenty-four million, two hundred fifty-three thousand, six hundred three".