20530411451 has 8 divisors (see below), whose sum is σ = 22398135984. Its totient is φ = 18662907520.

The previous prime is 20530411327. The next prime is 20530411459. The reversal of 20530411451 is 15411403502.

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-20530411451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20530411451.

It is not an unprimeable number, because it can be changed into a prime (20530411459) 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, 184895 + ... + 274311.

It is an arithmetic number, because the mean of its divisors is an integer number (2799766998).

Almost surely, 2^20530411451 is an apocalyptic number.

20530411451 is a deficient number, since it is larger than the sum of its proper divisors (1867724533).

20530411451 is a wasteful number, since it uses less digits than its factorization.

20530411451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110301.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 20530411451 its reverse (15411403502), we get a palindrome (35941814953).

The spelling of 20530411451 in words is "twenty billion, five hundred thirty million, four hundred eleven thousand, four hundred fifty-one".