20747401041656 has 32 divisors (see below), whose sum is σ = 38940816096000. Its totient is φ = 10363185272160.

The previous prime is 20747401041559. The next prime is 20747401041761. The reversal of 20747401041656 is 65614010474702.

It is a self number, because there is not a number n which added to its sum of digits gives 20747401041656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94143611 + ... + 94363733.

It is an arithmetic number, because the mean of its divisors is an integer number (1216900503000).

Almost surely, 2^{20747401041656} is an apocalyptic number.

It is an amenable number.

20747401041656 is a deficient number, since it is larger than the sum of its proper divisors (18193415054344).

20747401041656 is a wasteful number, since it uses less digits than its factorization.

20747401041656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232019 (or 232015 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 20747401041656 in words is "twenty trillion, seven hundred forty-seven billion, four hundred one million, forty-one thousand, six hundred fifty-six".