90387271511 has 2 divisors, whose sum is σ = 90387271512. Its totient is φ = 90387271510.

The previous prime is 90387271459. The next prime is 90387271517. The reversal of 90387271511 is 11517278309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90387271511 - 2¹⁸ = 90387009367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90387271517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45193635755 + 45193635756.

It is an arithmetic number, because the mean of its divisors is an integer number (45193635756).

Almost surely, 2^90387271511 is an apocalyptic number.

90387271511 is a deficient number, since it is larger than the sum of its proper divisors (1).

90387271511 is an equidigital number, since it uses as much as digits as its factorization.

90387271511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 90387271511 in words is "ninety billion, three hundred eighty-seven million, two hundred seventy-one thousand, five hundred eleven".