21470620647262 has 16 divisors (see below), whose sum is σ = 32687927459712. Its totient is φ = 10574657679960.

The previous prime is 21470620647251. The next prime is 21470620647263. The reversal of 21470620647262 is 26274602607412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470620647263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153553 + ... + 6554755.

It is an arithmetic number, because the mean of its divisors is an integer number (2042995466232).

Almost surely, 2^{21470620647262} is an apocalyptic number.

21470620647262 is a deficient number, since it is larger than the sum of its proper divisors (11217306812450).

21470620647262 is a wasteful number, since it uses less digits than its factorization.

21470620647262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426303.

The product of its (nonzero) digits is 2709504, while the sum is 49.

The spelling of 21470620647262 in words is "twenty-one trillion, four hundred seventy billion, six hundred twenty million, six hundred forty-seven thousand, two hundred sixty-two".