20255452985811 has 8 divisors (see below), whose sum is σ = 27009286620624. Its totient is φ = 13502627337440.

The previous prime is 20255452985743. The next prime is 20255452985893. The reversal of 20255452985811 is 11858925455202.

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 20255452985811 - 2²² = 20255448791507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20255452985011) 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, 251949720 + ... + 252030101.

It is an arithmetic number, because the mean of its divisors is an integer number (3376160827578).

Almost surely, 2^{20255452985811} is an apocalyptic number.

20255452985811 is a deficient number, since it is larger than the sum of its proper divisors (6753833634813).

20255452985811 is a wasteful number, since it uses less digits than its factorization.

20255452985811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503993221.

The product of its (nonzero) digits is 11520000, while the sum is 57.

The spelling of 20255452985811 in words is "twenty trillion, two hundred fifty-five billion, four hundred fifty-two million, nine hundred eighty-five thousand, eight hundred eleven".