20536506135 has 48 divisors (see below), whose sum is σ = 36211619808. Its totient is φ = 10763884800.

The previous prime is 20536506131. The next prime is 20536506149. The reversal of 20536506135 is 53160563502.

20536506135 is a `hidden beast` number, since 2 + 0 + 5 + 36 + 5 + 0 + 613 + 5 = 666.

It is not a de Polignac number, because 20536506135 - 2² = 20536506131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20536506135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20536506131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4095780 + ... + 4100790.

It is an arithmetic number, because the mean of its divisors is an integer number (754408746).

Almost surely, 2^20536506135 is an apocalyptic number.

20536506135 is a deficient number, since it is larger than the sum of its proper divisors (15675113673).

20536506135 is a wasteful number, since it uses less digits than its factorization.

20536506135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 20536506135 in words is "twenty billion, five hundred thirty-six million, five hundred six thousand, one hundred thirty-five".