11863511628 has 24 divisors (see below), whose sum is σ = 27704609520. Its totient is φ = 3951206400.

The previous prime is 11863511563. The next prime is 11863511657. The reversal of 11863511628 is 82611536811.

It is a self number, because there is not a number n which added to its sum of digits gives 11863511628.

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, 397173 + ... + 425996.

It is an arithmetic number, because the mean of its divisors is an integer number (1154358730).

Almost surely, 2^11863511628 is an apocalyptic number.

It is an amenable number.

11863511628 is an abundant number, since it is smaller than the sum of its proper divisors (15841097892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11863511628 is a wasteful number, since it uses less digits than its factorization.

11863511628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824377 (or 824375 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The spelling of 11863511628 in words is "eleven billion, eight hundred sixty-three million, five hundred eleven thousand, six hundred twenty-eight".