20051361151 has 4 divisors (see below), whose sum is σ = 20131247304. Its totient is φ = 19971475000.

The previous prime is 20051361133. The next prime is 20051361173. The reversal of 20051361151 is 15116315002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15116315002 = 2 ⋅7558157501.

It is a cyclic number.

It is not a de Polignac number, because 20051361151 - 2⁵ = 20051361119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051362151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39942700 + ... + 39943201.

It is an arithmetic number, because the mean of its divisors is an integer number (5032811826).

Almost surely, 2^20051361151 is an apocalyptic number.

20051361151 is a deficient number, since it is larger than the sum of its proper divisors (79886153).

20051361151 is an equidigital number, since it uses as much as digits as its factorization.

20051361151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79886152.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 20051361151 its reverse (15116315002), we get a palindrome (35167676153).

The spelling of 20051361151 in words is "twenty billion, fifty-one million, three hundred sixty-one thousand, one hundred fifty-one".