21270573466 has 16 divisors (see below), whose sum is σ = 33616312704. Its totient is φ = 10074114864.

The previous prime is 21270573463. The next prime is 21270573521. The reversal of 21270573466 is 66437507212.

It is not an unprimeable number, because it can be changed into a prime (21270573463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239941 + ... + 2249416.

It is an arithmetic number, because the mean of its divisors is an integer number (2101019544).

Almost surely, 2^21270573466 is an apocalyptic number.

21270573466 is a deficient number, since it is larger than the sum of its proper divisors (12345739238).

21270573466 is a wasteful number, since it uses less digits than its factorization.

21270573466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489485.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 21270573466 in words is "twenty-one billion, two hundred seventy million, five hundred seventy-three thousand, four hundred sixty-six".