20115254444051 has 8 divisors (see below), whose sum is σ = 21662617280640. Its totient is φ = 18567896689152.

The previous prime is 20115254444041. The next prime is 20115254444057. The reversal of 20115254444051 is 15044445251102.

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 20115254444051 - 2³⁴ = 20098074574867 is a prime.

It is a super-2 number, since 2×20115254444051² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20115254443996 and 20115254444014.

It is not an unprimeable number, because it can be changed into a prime (20115254444057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12395486 + ... + 13924028.

It is an arithmetic number, because the mean of its divisors is an integer number (2707827160080).

Almost surely, 2^{20115254444051} is an apocalyptic number.

20115254444051 is a deficient number, since it is larger than the sum of its proper divisors (1547362836589).

20115254444051 is a wasteful number, since it uses less digits than its factorization.

20115254444051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540845.

The product of its (nonzero) digits is 128000, while the sum is 38.

Adding to 20115254444051 its reverse (15044445251102), we get a palindrome (35159699695153).

The spelling of 20115254444051 in words is "twenty trillion, one hundred fifteen billion, two hundred fifty-four million, four hundred forty-four thousand, fifty-one".