20606015640041 has 4 divisors (see below), whose sum is σ = 22191093766212. Its totient is φ = 19020937513872.

The previous prime is 20606015639953. The next prime is 20606015640053. The reversal of 20606015640041 is 14004651060602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10312955081641 + 10293060558400 = 3211379^2 + 3208280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20606015640041 is a prime.

It is a super-2 number, since 2×20606015640041² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20606015639983 and 20606015640010.

It is not an unprimeable number, because it can be changed into a prime (20606015640061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792539063066 + ... + 792539063091.

It is an arithmetic number, because the mean of its divisors is an integer number (5547773441553).

Almost surely, 2^{20606015640041} is an apocalyptic number.

It is an amenable number.

20606015640041 is a deficient number, since it is larger than the sum of its proper divisors (1585078126171).

20606015640041 is a wasteful number, since it uses less digits than its factorization.

20606015640041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585078126170.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 20606015640041 in words is "twenty trillion, six hundred six billion, fifteen million, six hundred forty thousand, forty-one".