105665556502 has 24 divisors (see below), whose sum is σ = 176316213528. Its totient is φ = 47451117120.

The previous prime is 105665556497. The next prime is 105665556517. The reversal of 105665556502 is 205655566501.

It is a super-2 number, since 2×105665556502² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2610243 + ... + 2650414.

It is an arithmetic number, because the mean of its divisors is an integer number (7346508897).

Almost surely, 2^105665556502 is an apocalyptic number.

105665556502 is a deficient number, since it is larger than the sum of its proper divisors (70650657026).

105665556502 is a wasteful number, since it uses less digits than its factorization.

105665556502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260764 (or 5260753 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 46.

Subtracting 105665556502 from its reverse (205655566501), we obtain a palindrome (99990009999).

The spelling of 105665556502 in words is "one hundred five billion, six hundred sixty-five million, five hundred fifty-six thousand, five hundred two".