21470663145310 has 16 divisors (see below), whose sum is σ = 38653305936336. Its totient is φ = 8586906974848.

The previous prime is 21470663145307. The next prime is 21470663145341. The reversal of 21470663145310 is 1354136607412.

It is a happy number.

It is a super-2 number, since 2×21470663145310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169719019 + ... + 169845478.

It is an arithmetic number, because the mean of its divisors is an integer number (2415831621021).

Almost surely, 2^{21470663145310} is an apocalyptic number.

21470663145310 is a deficient number, since it is larger than the sum of its proper divisors (17182642791026).

21470663145310 is a wasteful number, since it uses less digits than its factorization.

21470663145310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339570827.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 21470663145310 in words is "twenty-one trillion, four hundred seventy billion, six hundred sixty-three million, one hundred forty-five thousand, three hundred ten".