20351552040361 has 8 divisors (see below), whose sum is σ = 20780029146240. Its totient is φ = 19927515112032.

The previous prime is 20351552040349. The next prime is 20351552040373. The reversal of 20351552040361 is 16304025515302.

It is an interprime number because it is at equal distance from previous prime (20351552040349) and next prime (20351552040373).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20351552040361 - 2⁵ = 20351552040329 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 20351552040361.

It is not an unprimeable number, because it can be changed into a prime (20351552040301) 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, 1110035125 + ... + 1110053458.

It is an arithmetic number, because the mean of its divisors is an integer number (2597503643280).

Almost surely, 2^{20351552040361} is an apocalyptic number.

It is an amenable number.

20351552040361 is a deficient number, since it is larger than the sum of its proper divisors (428477105879).

20351552040361 is a wasteful number, since it uses less digits than its factorization.

20351552040361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220088775.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 20351552040361 its reverse (16304025515302), we get a palindrome (36655577555663).

The spelling of 20351552040361 in words is "twenty trillion, three hundred fifty-one billion, five hundred fifty-two million, forty thousand, three hundred sixty-one".