20488232815451 has 8 divisors (see below), whose sum is σ = 20671101279024. Its totient is φ = 20305391662080.

The previous prime is 20488232815399. The next prime is 20488232815511. The reversal of 20488232815451 is 15451823288402.

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-20488232815451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20488232815393 and 20488232815402.

It is not an unprimeable number, because it can be changed into a prime (20488232815751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5318966 + ... + 8322731.

It is an arithmetic number, because the mean of its divisors is an integer number (2583887659878).

Almost surely, 2^{20488232815451} is an apocalyptic number.

20488232815451 is a deficient number, since it is larger than the sum of its proper divisors (182868463573).

20488232815451 is a wasteful number, since it uses less digits than its factorization.

20488232815451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13655101.

The product of its (nonzero) digits is 4915200, while the sum is 53.

The spelling of 20488232815451 in words is "twenty trillion, four hundred eighty-eight billion, two hundred thirty-two million, eight hundred fifteen thousand, four hundred fifty-one".