20051811453 has 8 divisors (see below), whose sum is σ = 26939838816. Its totient is φ = 13265829200.

The previous prime is 20051811407. The next prime is 20051811463. The reversal of 20051811453 is 35411815002.

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-20051811453 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20051811453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051811463) 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, 25510818 + ... + 25511603.

It is an arithmetic number, because the mean of its divisors is an integer number (3367479852).

Almost surely, 2^20051811453 is an apocalyptic number.

It is an amenable number.

20051811453 is a deficient number, since it is larger than the sum of its proper divisors (6888027363).

20051811453 is a wasteful number, since it uses less digits than its factorization.

20051811453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51022555.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 20051811453 in words is "twenty billion, fifty-one million, eight hundred eleven thousand, four hundred fifty-three".