20547122097 has 32 divisors (see below), whose sum is σ = 29860088832. Its totient is φ = 12518498304.

The previous prime is 20547122093. The next prime is 20547122119. The reversal of 20547122097 is 79022174502.

It is not a de Polignac number, because 20547122097 - 2² = 20547122093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20547122093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223008 + ... + 301374.

It is an arithmetic number, because the mean of its divisors is an integer number (933127776).

Almost surely, 2^20547122097 is an apocalyptic number.

It is an amenable number.

20547122097 is a deficient number, since it is larger than the sum of its proper divisors (9312966735).

20547122097 is a wasteful number, since it uses less digits than its factorization.

20547122097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78537.

The product of its (nonzero) digits is 70560, while the sum is 39.

Adding to 20547122097 its reverse (79022174502), we get a palindrome (99569296599).

The spelling of 20547122097 in words is "twenty billion, five hundred forty-seven million, one hundred twenty-two thousand, ninety-seven".