20685363802276 has 24 divisors (see below), whose sum is σ = 37178296021496. Its totient is φ = 10063001744640.

The previous prime is 20685363802241. The next prime is 20685363802283. The reversal of 20685363802276 is 67220836358602.

It can be written as a sum of positive squares in 4 ways, for example, as 16992532840000 + 3692830962276 = 4122200^2 + 1921674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20685363802276.

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, 9409846 + ... + 11398066.

Almost surely, 2^{20685363802276} is an apocalyptic number.

It is an amenable number.

20685363802276 is a deficient number, since it is larger than the sum of its proper divisors (16492932219220).

20685363802276 is a wasteful number, since it uses less digits than its factorization.

20685363802276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058559 (or 2058557 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 20685363802276 in words is "twenty trillion, six hundred eighty-five billion, three hundred sixty-three million, eight hundred two thousand, two hundred seventy-six".