21470657024453 has 12 divisors (see below), whose sum is σ = 26570618669088. Its totient is φ = 16987772589840.

The previous prime is 21470657024449. The next prime is 21470657024477. The reversal of 21470657024453 is 35442075607412.

It is not a de Polignac number, because 21470657024453 - 2² = 21470657024449 is a prime.

It is a super-2 number, since 2×21470657024453² (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 (21470657024053) 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, 9074663663 + ... + 9074666028.

It is an arithmetic number, because the mean of its divisors is an integer number (2214218222424).

Almost surely, 2^{21470657024453} is an apocalyptic number.

It is an amenable number.

21470657024453 is a deficient number, since it is larger than the sum of its proper divisors (5099961644635).

21470657024453 is a wasteful number, since it uses less digits than its factorization.

21470657024453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18149329724 (or 18149329711 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 50.

The spelling of 21470657024453 in words is "twenty-one trillion, four hundred seventy billion, six hundred fifty-seven million, twenty-four thousand, four hundred fifty-three".