14212520643 has 16 divisors (see below), whose sum is σ = 19062852480. Its totient is φ = 9418763904.

The previous prime is 14212520639. The next prime is 14212520671. The reversal of 14212520643 is 34602521241.

It is not a de Polignac number, because 14212520643 - 2² = 14212520639 is a prime.

It is a super-2 number, since 2×14212520643² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14212520643.

It is not an unprimeable number, because it can be changed into a prime (14212520683) 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, 335755 + ... + 375707.

It is an arithmetic number, because the mean of its divisors is an integer number (1191428280).

Almost surely, 2^14212520643 is an apocalyptic number.

14212520643 is a deficient number, since it is larger than the sum of its proper divisors (4850331837).

14212520643 is a wasteful number, since it uses less digits than its factorization.

14212520643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40658.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 14212520643 in words is "fourteen billion, two hundred twelve million, five hundred twenty thousand, six hundred forty-three".