21611167434050 has 48 divisors (see below), whose sum is σ = 42315070010400. Its totient is φ = 8188976505600.

The previous prime is 21611167434041. The next prime is 21611167434079. The reversal of 21611167434050 is 5043476111612.

It is a super-2 number, since 2×21611167434050² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21611167433989 and 21611167434007.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14460266 + ... + 15884634.

It is an arithmetic number, because the mean of its divisors is an integer number (881563958550).

Almost surely, 2^{21611167434050} is an apocalyptic number.

21611167434050 is a deficient number, since it is larger than the sum of its proper divisors (20703902576350).

21611167434050 is a wasteful number, since it uses less digits than its factorization.

21611167434050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440371 (or 1440366 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 21611167434050 in words is "twenty-one trillion, six hundred eleven billion, one hundred sixty-seven million, four hundred thirty-four thousand, fifty".