20413165235651 has 4 divisors (see below), whose sum is σ = 20603942480952. Its totient is φ = 20222387990352.

The previous prime is 20413165235633. The next prime is 20413165235699. The reversal of 20413165235651 is 15653256131402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20413165235651 - 2¹⁸ = 20413164973507 is a prime.

It is a super-3 number, since 3×20413165235651³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413165135651) 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, 95388622490 + ... + 95388622703.

It is an arithmetic number, because the mean of its divisors is an integer number (5150985620238).

Almost surely, 2^{20413165235651} is an apocalyptic number.

20413165235651 is a deficient number, since it is larger than the sum of its proper divisors (190777245301).

20413165235651 is a wasteful number, since it uses less digits than its factorization.

20413165235651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190777245300.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 20413165235651 in words is "twenty trillion, four hundred thirteen billion, one hundred sixty-five million, two hundred thirty-five thousand, six hundred fifty-one".