20686704271148 has 24 divisors (see below), whose sum is σ = 36712207768320. Its totient is φ = 10197506748240.

The previous prime is 20686704271127. The next prime is 20686704271157. The reversal of 20686704271148 is 84117240768602.

It is a super-4 number, since 4×20686704271148⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20686704271093 and 20686704271102.

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, 18110015 + ... + 19218377.

It is an arithmetic number, because the mean of its divisors is an integer number (1529675323680).

Almost surely, 2^{20686704271148} is an apocalyptic number.

It is an amenable number.

20686704271148 is a deficient number, since it is larger than the sum of its proper divisors (16025503497172).

20686704271148 is a wasteful number, since it uses less digits than its factorization.

20686704271148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174157 (or 1174155 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 20686704271148 in words is "twenty trillion, six hundred eighty-six billion, seven hundred four million, two hundred seventy-one thousand, one hundred forty-eight".