10195654321 has 2 divisors, whose sum is σ = 10195654322. Its totient is φ = 10195654320.

The previous prime is 10195654297. The next prime is 10195654331. The reversal of 10195654321 is 12345659101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5671746721 + 4523907600 = 75311^2 + 67260^2 .

It is a cyclic number.

It is not a de Polignac number, because 10195654321 - 2⁷ = 10195654193 is a prime.

It is not a weakly prime, because it can be changed into another prime (10195654331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5097827160 + 5097827161.

It is an arithmetic number, because the mean of its divisors is an integer number (5097827161).

Almost surely, 2^10195654321 is an apocalyptic number.

It is an amenable number.

10195654321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10195654321 is an equidigital number, since it uses as much as digits as its factorization.

10195654321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 10195654321 in words is "ten billion, one hundred ninety-five million, six hundred fifty-four thousand, three hundred twenty-one".