20004005451 has 8 divisors (see below), whose sum is σ = 28240948944. Its totient is φ = 12551532800.

The previous prime is 20004005423. The next prime is 20004005453. The reversal of 20004005451 is 15450040002.

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 20004005451 - 2⁶ = 20004005387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20004005453) 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, 196117650 + ... + 196117751.

It is an arithmetic number, because the mean of its divisors is an integer number (3530118618).

Almost surely, 2^20004005451 is an apocalyptic number.

20004005451 is a deficient number, since it is larger than the sum of its proper divisors (8236943493).

20004005451 is a wasteful number, since it uses less digits than its factorization.

20004005451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392235421.

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 20004005451 its reverse (15450040002), we get a palindrome (35454045453).

The spelling of 20004005451 in words is "twenty billion, four million, five thousand, four hundred fifty-one".