20458497701 has 4 divisors (see below), whose sum is σ = 20461377804. Its totient is φ = 20455617600.

The previous prime is 20458497667. The next prime is 20458497721. The reversal of 20458497701 is 10779485402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7359924100 + 13098573601 = 85790^2 + 114449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20458497701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20458497721) 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 3 ways as a sum of consecutive naturals, for example, 1429370 + ... + 1443611.

It is an arithmetic number, because the mean of its divisors is an integer number (5115344451).

Almost surely, 2^20458497701 is an apocalyptic number.

It is an amenable number.

20458497701 is a deficient number, since it is larger than the sum of its proper divisors (2880103).

20458497701 is an equidigital number, since it uses as much as digits as its factorization.

20458497701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880102.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 20458497701 in words is "twenty billion, four hundred fifty-eight million, four hundred ninety-seven thousand, seven hundred one".