20536162555 has 4 divisors (see below), whose sum is σ = 24643395072. Its totient is φ = 16428930040.

The previous prime is 20536162523. The next prime is 20536162637. The reversal of 20536162555 is 55526163502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20536162555 - 2⁵ = 20536162523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053616251 + ... + 2053616260.

It is an arithmetic number, because the mean of its divisors is an integer number (6160848768).

Almost surely, 2^20536162555 is an apocalyptic number.

20536162555 is a deficient number, since it is larger than the sum of its proper divisors (4107232517).

20536162555 is an equidigital number, since it uses as much as digits as its factorization.

20536162555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107232516.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 20536162555 in words is "twenty billion, five hundred thirty-six million, one hundred sixty-two thousand, five hundred fifty-five".