19551106097 has 2 divisors, whose sum is σ = 19551106098. Its totient is φ = 19551106096.

The previous prime is 19551106087. The next prime is 19551106109. The reversal of 19551106097 is 79060115591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15605256241 + 3945849856 = 124921^2 + 62816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19551106097 is a prime.

It is not a weakly prime, because it can be changed into another prime (19551106067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9775553048 + 9775553049.

It is an arithmetic number, because the mean of its divisors is an integer number (9775553049).

Almost surely, 2^19551106097 is an apocalyptic number.

It is an amenable number.

19551106097 is a deficient number, since it is larger than the sum of its proper divisors (1).

19551106097 is an equidigital number, since it uses as much as digits as its factorization.

19551106097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 44.

The spelling of 19551106097 in words is "nineteen billion, five hundred fifty-one million, one hundred six thousand, ninety-seven".