20535323545 has 48 divisors (see below), whose sum is σ = 28062365760. Its totient is φ = 14305491200.

The previous prime is 20535323531. The next prime is 20535323573. The reversal of 20535323545 is 54532353502.

It is not a de Polignac number, because 20535323545 - 2²¹ = 20533226393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6057711 + ... + 6061099.

It is an arithmetic number, because the mean of its divisors is an integer number (584632620).

Almost surely, 2^20535323545 is an apocalyptic number.

It is an amenable number.

20535323545 is a deficient number, since it is larger than the sum of its proper divisors (7527042215).

20535323545 is a wasteful number, since it uses less digits than its factorization.

20535323545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3565 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 37.

The spelling of 20535323545 in words is "twenty billion, five hundred thirty-five million, three hundred twenty-three thousand, five hundred forty-five".