20542062505311 has 12 divisors (see below), whose sum is σ = 29949175242792. Its totient is φ = 13566720407856.

The previous prime is 20542062505271. The next prime is 20542062505373. The reversal of 20542062505311 is 11350526024502.

20542062505311 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 20 + 625 + 0 + 5 + 3 + 1 + 1 = 666.

It is not a de Polignac number, because 20542062505311 - 2⁶ = 20542062505247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542062505411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10665659736 + ... + 10665661661.

It is an arithmetic number, because the mean of its divisors is an integer number (2495764603566).

Almost surely, 2^{20542062505311} is an apocalyptic number.

20542062505311 is a deficient number, since it is larger than the sum of its proper divisors (9407112737481).

20542062505311 is a wasteful number, since it uses less digits than its factorization.

20542062505311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331321510 (or 21331321507 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 20542062505311 its reverse (11350526024502), we get a palindrome (31892588529813).

The spelling of 20542062505311 in words is "twenty trillion, five hundred forty-two billion, sixty-two million, five hundred five thousand, three hundred eleven".