20452845497 has 8 divisors (see below), whose sum is σ = 23428667136. Its totient is φ = 17490520512.

The previous prime is 20452845463. The next prime is 20452845509. The reversal of 20452845497 is 79454825402.

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 20452845497 - 2⁶ = 20452845433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20452845407) 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, 3370913 + ... + 3376974.

It is an arithmetic number, because the mean of its divisors is an integer number (2928583392).

Almost surely, 2^20452845497 is an apocalyptic number.

It is an amenable number.

20452845497 is a deficient number, since it is larger than the sum of its proper divisors (2975821639).

20452845497 is an equidigital number, since it uses as much as digits as its factorization.

20452845497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748327.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 20452845497 in words is "twenty billion, four hundred fifty-two million, eight hundred forty-five thousand, four hundred ninety-seven".