11661063502 has 16 divisors (see below), whose sum is σ = 19739732400. Its totient is φ = 5117707840.

The previous prime is 11661063481. The next prime is 11661063511. The reversal of 11661063502 is 20536016611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9138127 + ... + 9139402.

It is an arithmetic number, because the mean of its divisors is an integer number (1233733275).

Almost surely, 2^11661063502 is an apocalyptic number.

11661063502 is a deficient number, since it is larger than the sum of its proper divisors (8078668898).

11661063502 is a wasteful number, since it uses less digits than its factorization.

11661063502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18277571.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 11661063502 in words is "eleven billion, six hundred sixty-one million, sixty-three thousand, five hundred two".