20476339956241 has 9 divisors (see below), whose sum is σ = 22172668504059. Its totient is φ = 18901182581736.

The previous prime is 20476339956229. The next prime is 20476339956257. The reversal of 20476339956241 is 14265993367402.

It is a happy number.

The square root of 20476339956241 is 4525079.

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., 3029044372225 + 17447295584016 = 1740415^2 + 4176996^2 .

It is not a de Polignac number, because 20476339956241 - 2¹³ = 20476339948049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20476339956241.

It is not an unprimeable number, because it can be changed into a prime (20476339956841) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 58651986 + ... + 59000068.

Almost surely, 2^{20476339956241} is an apocalyptic number.

20476339956241 is the 4525079-th square number.

20476339956241 is the 2262540-th centered octagonal number.

It is an amenable number.

20476339956241 is a deficient number, since it is larger than the sum of its proper divisors (1696328547818).

20476339956241 is an frugal number, since it uses more digits than its factorization.

20476339956241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696192 (or 348096 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 61.

The spelling of 20476339956241 in words is "twenty trillion, four hundred seventy-six billion, three hundred thirty-nine million, nine hundred fifty-six thousand, two hundred forty-one".