20954165415184 has 15 divisors (see below), whose sum is σ = 40598730968133. Its totient is φ = 10477073552448.

The previous prime is 20954165415179. The next prime is 20954165415203. The reversal of 20954165415184 is 48151456145902.

The square root of 20954165415184 is 4577572.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12044370250000 + 8909795165184 = 3470500^2 + 2984928^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17738092 + ... + 18882484.

Almost surely, 2^{20954165415184} is an apocalyptic number.

20954165415184 is the 4577572-nd square number.

It is an amenable number.

20954165415184 is a deficient number, since it is larger than the sum of its proper divisors (19644565552949).

20954165415184 is an frugal number, since it uses more digits than its factorization.

20954165415184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288794 (or 1144395 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 20954165415184 in words is "twenty trillion, nine hundred fifty-four billion, one hundred sixty-five million, four hundred fifteen thousand, one hundred eighty-four".