20630656161436 has 24 divisors (see below), whose sum is σ = 36119978425440. Its totient is φ = 10310663372352.

The previous prime is 20630656161433. The next prime is 20630656161439. The reversal of 20630656161436 is 63416165603602.

It is an interprime number because it is at equal distance from previous prime (20630656161433) and next prime (20630656161439).

It is a self number, because there is not a number n which added to its sum of digits gives 20630656161436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630656161433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81568626 + ... + 81821158.

It is an arithmetic number, because the mean of its divisors is an integer number (1504999101060).

Almost surely, 2^{20630656161436} is an apocalyptic number.

It is an amenable number.

20630656161436 is a deficient number, since it is larger than the sum of its proper divisors (15489322264004).

20630656161436 is a wasteful number, since it uses less digits than its factorization.

20630656161436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261693 (or 261691 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 20630656161436 in words is "twenty trillion, six hundred thirty billion, six hundred fifty-six million, one hundred sixty-one thousand, four hundred thirty-six".