20051051461 has 8 divisors (see below), whose sum is σ = 22925171264. Its totient is φ = 17179352640.

The previous prime is 20051051437. The next prime is 20051051473. The reversal of 20051051461 is 16415015002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20051051461 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 (20051051431) 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, 587460 + ... + 620653.

It is an arithmetic number, because the mean of its divisors is an integer number (2865646408).

Almost surely, 2^20051051461 is an apocalyptic number.

It is an amenable number.

20051051461 is a deficient number, since it is larger than the sum of its proper divisors (2874119803).

20051051461 is a wasteful number, since it uses less digits than its factorization.

20051051461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210491.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 20051051461 its reverse (16415015002), we get a palindrome (36466066463).

The spelling of 20051051461 in words is "twenty billion, fifty-one million, fifty-one thousand, four hundred sixty-one".