21246606167066 has 32 divisors (see below), whose sum is σ = 37598020853760. Its totient is φ = 8811876812400.

The previous prime is 21246606167011. The next prime is 21246606167071. The reversal of 21246606167066 is 66076160664212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21246606166999 and 21246606167017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94438451 + ... + 94663161.

It is an arithmetic number, because the mean of its divisors is an integer number (1174938151680).

Almost surely, 2^{21246606167066} is an apocalyptic number.

21246606167066 is a deficient number, since it is larger than the sum of its proper divisors (16351414686694).

21246606167066 is a wasteful number, since it uses less digits than its factorization.

21246606167066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442610.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 21246606167066 in words is "twenty-one trillion, two hundred forty-six billion, six hundred six million, one hundred sixty-seven thousand, sixty-six".