20453321451 has 8 divisors (see below), whose sum is σ = 27271862784. Its totient is φ = 13635163880.

The previous prime is 20453321431. The next prime is 20453321467. The reversal of 20453321451 is 15412335402.

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-20453321451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20453321431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68866 + ... + 213656.

It is an arithmetic number, because the mean of its divisors is an integer number (3408982848).

Almost surely, 2^20453321451 is an apocalyptic number.

20453321451 is a deficient number, since it is larger than the sum of its proper divisors (6818541333).

20453321451 is a wasteful number, since it uses less digits than its factorization.

20453321451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191881.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 20453321451 its reverse (15412335402), we get a palindrome (35865656853).

The spelling of 20453321451 in words is "twenty billion, four hundred fifty-three million, three hundred twenty-one thousand, four hundred fifty-one".