20004310217451 has 16 divisors (see below), whose sum is σ = 30483135334400. Its totient is φ = 11430893069568.

The previous prime is 20004310217431. The next prime is 20004310217477. The reversal of 20004310217451 is 15471201340002.

It is not a de Polignac number, because 20004310217451 - 2⁶ = 20004310217387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20004310217431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4138246 + ... + 7558683.

It is an arithmetic number, because the mean of its divisors is an integer number (1905195958400).

Almost surely, 2^{20004310217451} is an apocalyptic number.

20004310217451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20004310217451 is a deficient number, since it is larger than the sum of its proper divisors (10478825116949).

20004310217451 is a wasteful number, since it uses less digits than its factorization.

20004310217451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778378.

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 20004310217451 its reverse (15471201340002), we get a palindrome (35475511557453).

The spelling of 20004310217451 in words is "twenty trillion, four billion, three hundred ten million, two hundred seventeen thousand, four hundred fifty-one".