306243726646 has 16 divisors (see below), whose sum is σ = 539674260048. Its totient is φ = 128493871200.

The previous prime is 306243726589. The next prime is 306243726673. The reversal of 306243726646 is 646627342603.

It is a super-2 number, since 2×306243726646² (a number of 24 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 306243726646.

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, 535390845 + ... + 535391416.

It is an arithmetic number, because the mean of its divisors is an integer number (33729641253).

Almost surely, 2^306243726646 is an apocalyptic number.

306243726646 is a deficient number, since it is larger than the sum of its proper divisors (233430533402).

306243726646 is a wasteful number, since it uses less digits than its factorization.

306243726646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070782287.

The product of its (nonzero) digits is 5225472, while the sum is 49.

The spelling of 306243726646 in words is "three hundred six billion, two hundred forty-three million, seven hundred twenty-six thousand, six hundred forty-six".