21467270465571 has 16 divisors (see below), whose sum is σ = 32712170358528. Its totient is φ = 12266959504800.

The previous prime is 21467270465549. The next prime is 21467270465573. The reversal of 21467270465571 is 17556407276412.

It is not a de Polignac number, because 21467270465571 - 2⁶ = 21467270465507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21467270465573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3186256 + ... + 7286066.

It is an arithmetic number, because the mean of its divisors is an integer number (2044510647408).

Almost surely, 2^{21467270465571} is an apocalyptic number.

21467270465571 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21467270465571 is a deficient number, since it is larger than the sum of its proper divisors (11244899892957).

21467270465571 is a wasteful number, since it uses less digits than its factorization.

21467270465571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349162.

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

The spelling of 21467270465571 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred seventy million, four hundred sixty-five thousand, five hundred seventy-one".