20551023097 has 8 divisors (see below), whose sum is σ = 22483540800. Its totient is φ = 18629212560.

The previous prime is 20551023091. The next prime is 20551023113. The reversal of 20551023097 is 79032015502.

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 20551023097 - 2⁷ = 20551022969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20551023091) 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, 2672773 + ... + 2680450.

It is an arithmetic number, because the mean of its divisors is an integer number (2810442600).

Almost surely, 2^20551023097 is an apocalyptic number.

It is an amenable number.

20551023097 is a deficient number, since it is larger than the sum of its proper divisors (1932517703).

20551023097 is a wasteful number, since it uses less digits than its factorization.

20551023097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353583.

The product of its (nonzero) digits is 18900, while the sum is 34.

Adding to 20551023097 its reverse (79032015502), we get a palindrome (99583038599).

The spelling of 20551023097 in words is "twenty billion, five hundred fifty-one million, twenty-three thousand, ninety-seven".