20473536547 has 8 divisors (see below), whose sum is σ = 20534943744. Its totient is φ = 20412171528.

The previous prime is 20473536527. The next prime is 20473536607. The reversal of 20473536547 is 74563537402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20473536547 - 2¹⁵ = 20473503779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20473536497 and 20473536506.

It is not an unprimeable number, because it can be changed into a prime (20473536527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148968 + ... + 1166650.

It is an arithmetic number, because the mean of its divisors is an integer number (2566867968).

Almost surely, 2^20473536547 is an apocalyptic number.

20473536547 is a deficient number, since it is larger than the sum of its proper divisors (61407197).

20473536547 is a wasteful number, since it uses less digits than its factorization.

20473536547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21089.

The product of its (nonzero) digits is 2116800, while the sum is 46.

The spelling of 20473536547 in words is "twenty billion, four hundred seventy-three million, five hundred thirty-six thousand, five hundred forty-seven".