20535011534 has 24 divisors (see below), whose sum is σ = 31929124968. Its totient is φ = 9904808480.

The previous prime is 20535011521. The next prime is 20535011543. The reversal of 20535011534 is 43511053502.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20535011497 and 20535011506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2193704 + ... + 2203044.

It is an arithmetic number, because the mean of its divisors is an integer number (1330380207).

Almost surely, 2^20535011534 is an apocalyptic number.

20535011534 is a deficient number, since it is larger than the sum of its proper divisors (11394113434).

20535011534 is a wasteful number, since it uses less digits than its factorization.

20535011534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10708 (or 10679 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 20535011534 in words is "twenty billion, five hundred thirty-five million, eleven thousand, five hundred thirty-four".