20457348080399 has 16 divisors (see below), whose sum is σ = 20586423240000. Its totient is φ = 20328631392000.

The previous prime is 20457348080359. The next prime is 20457348080453. The reversal of 20457348080399 is 99308084375402.

It is a Cunningham number, because it is equal to 4522980²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20457348080399 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 (20457348080339) 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 15 ways as a sum of consecutive naturals, for example, 1035752774 + ... + 1035772524.

It is an arithmetic number, because the mean of its divisors is an integer number (1286651452500).

Almost surely, 2^{20457348080399} is an apocalyptic number.

20457348080399 is a deficient number, since it is larger than the sum of its proper divisors (129075159601).

20457348080399 is a wasteful number, since it uses less digits than its factorization.

20457348080399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28498.

The product of its (nonzero) digits is 52254720, while the sum is 62.

The spelling of 20457348080399 in words is "twenty trillion, four hundred fifty-seven billion, three hundred forty-eight million, eighty thousand, three hundred ninety-nine".