20072664547 has 6 divisors (see below), whose sum is σ = 21735489012. Its totient is φ = 18528613272.

The previous prime is 20072664533. The next prime is 20072664559. The reversal of 20072664547 is 74546627002.

It is not a de Polignac number, because 20072664547 - 2³¹ = 17925180899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20072664587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59386413 + ... + 59386750.

It is an arithmetic number, because the mean of its divisors is an integer number (3622581502).

Almost surely, 2^20072664547 is an apocalyptic number.

20072664547 is a deficient number, since it is larger than the sum of its proper divisors (1662824465).

20072664547 is a wasteful number, since it uses less digits than its factorization.

20072664547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118773189 (or 118773176 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 20072664547 in words is "twenty billion, seventy-two million, six hundred sixty-four thousand, five hundred forty-seven".