21403275242607 has 12 divisors (see below), whose sum is σ = 31981905535320. Its totient is φ = 13776820845648.

The previous prime is 21403275242593. The next prime is 21403275242617. The reversal of 21403275242607 is 70624257230412.

21403275242607 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 32 + 7 + 5 + 2 + 4 + 2 + 607 = 666.

It is not a de Polignac number, because 21403275242607 - 2¹⁰ = 21403275241583 is a prime.

It is a super-2 number, since 2×21403275242607² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403275242617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41002442733 + ... + 41002443254.

It is an arithmetic number, because the mean of its divisors is an integer number (2665158794610).

Almost surely, 2^{21403275242607} is an apocalyptic number.

21403275242607 is a deficient number, since it is larger than the sum of its proper divisors (10578630292713).

21403275242607 is a wasteful number, since it uses less digits than its factorization.

21403275242607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82004886022 (or 82004886019 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 21403275242607 in words is "twenty-one trillion, four hundred three billion, two hundred seventy-five million, two hundred forty-two thousand, six hundred seven".