20457775267105 has 8 divisors (see below), whose sum is σ = 26781087622464. Its totient is φ = 14878382012400.

The previous prime is 20457775267063. The next prime is 20457775267129. The reversal of 20457775267105 is 50176257775402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20457775267105 - 2²⁵ = 20457741712673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20457775267105.

It is an unprimeable number.

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, 185979775101 + ... + 185979775210.

It is an arithmetic number, because the mean of its divisors is an integer number (3347635952808).

Almost surely, 2^{20457775267105} is an apocalyptic number.

It is an amenable number.

20457775267105 is a deficient number, since it is larger than the sum of its proper divisors (6323312355359).

20457775267105 is a wasteful number, since it uses less digits than its factorization.

20457775267105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371959550327.

The product of its (nonzero) digits is 28812000, while the sum is 58.

The spelling of 20457775267105 in words is "twenty trillion, four hundred fifty-seven billion, seven hundred seventy-five million, two hundred sixty-seven thousand, one hundred five".