21425375271069 has 64 divisors (see below), whose sum is σ = 39626829434880. Its totient is φ = 11115084375360.

The previous prime is 21425375270939. The next prime is 21425375271137. The reversal of 21425375271069 is 96017257352412.

21425375271069 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 5 + 3 + 7 + 527 + 106 + 9 = 666.

It is not a de Polignac number, because 21425375271069 - 2¹³ = 21425375262877 is a prime.

It is a super-2 number, since 2×21425375271069² (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 (21425375273069) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5390442 + ... + 8479835.

It is an arithmetic number, because the mean of its divisors is an integer number (619169209920).

Almost surely, 2^{21425375271069} is an apocalyptic number.

It is an amenable number.

21425375271069 is a deficient number, since it is larger than the sum of its proper divisors (18201454163811).

21425375271069 is a wasteful number, since it uses less digits than its factorization.

21425375271069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13871047 (or 13871041 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 21425375271069 in words is "twenty-one trillion, four hundred twenty-five billion, three hundred seventy-five million, two hundred seventy-one thousand, sixty-nine".