20457325857755 has 16 divisors (see below), whose sum is σ = 25141571557920. Its totient is φ = 15973873563648.

The previous prime is 20457325857697. The next prime is 20457325857763. The reversal of 20457325857755 is 55775852375402.

It is a cyclic number.

It is not a de Polignac number, because 20457325857755 - 2⁶ = 20457325857691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20457325857691 and 20457325857700.

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 15 ways as a sum of consecutive naturals, for example, 199942265 + ... + 200044554.

It is an arithmetic number, because the mean of its divisors is an integer number (1571348222370).

Almost surely, 2^{20457325857755} is an apocalyptic number.

20457325857755 is a deficient number, since it is larger than the sum of its proper divisors (4684245700165).

20457325857755 is a wasteful number, since it uses less digits than its factorization.

20457325857755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399987070.

The product of its (nonzero) digits is 411600000, while the sum is 65.

The spelling of 20457325857755 in words is "twenty trillion, four hundred fifty-seven billion, three hundred twenty-five million, eight hundred fifty-seven thousand, seven hundred fifty-five".