20691061682 has 16 divisors (see below), whose sum is σ = 31388902272. Its totient is φ = 10228421280.

The previous prime is 20691061663. The next prime is 20691061711. The reversal of 20691061682 is 28616019602.

It is a happy number.

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, 45707 + ... + 208497.

It is an arithmetic number, because the mean of its divisors is an integer number (1961806392).

Almost surely, 2^20691061682 is an apocalyptic number.

20691061682 is a deficient number, since it is larger than the sum of its proper divisors (10697840590).

20691061682 is a wasteful number, since it uses less digits than its factorization.

20691061682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163513.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 20691061682 in words is "twenty billion, six hundred ninety-one million, sixty-one thousand, six hundred eighty-two".