15532020191 has 2 divisors, whose sum is σ = 15532020192. Its totient is φ = 15532020190.

The previous prime is 15532020167. The next prime is 15532020253. The reversal of 15532020191 is 19102023551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15532020191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15532020391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7766010095 + 7766010096.

It is an arithmetic number, because the mean of its divisors is an integer number (7766010096).

Almost surely, 2^15532020191 is an apocalyptic number.

15532020191 is a deficient number, since it is larger than the sum of its proper divisors (1).

15532020191 is an equidigital number, since it uses as much as digits as its factorization.

15532020191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 29.

The spelling of 15532020191 in words is "fifteen billion, five hundred thirty-two million, twenty thousand, one hundred ninety-one".