21357176475441 has 12 divisors (see below), whose sum is σ = 28882957983536. Its totient is φ = 14037580772040.

The previous prime is 21357176475431. The next prime is 21357176475511. The reversal of 21357176475441 is 14457467175312.

It is not a de Polignac number, because 21357176475441 - 2⁹ = 21357176474929 is a prime.

It is a super-2 number, since 2×21357176475441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21357176475431) 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, 706100611 + ... + 706130856.

Almost surely, 2^{21357176475441} is an apocalyptic number.

It is an amenable number.

21357176475441 is a deficient number, since it is larger than the sum of its proper divisors (7525781508095).

21357176475441 is an equidigital number, since it uses as much as digits as its factorization.

21357176475441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412231612 (or 1412231541 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 57.

The spelling of 21357176475441 in words is "twenty-one trillion, three hundred fifty-seven billion, one hundred seventy-six million, four hundred seventy-five thousand, four hundred forty-one".