90134842727 has 2 divisors, whose sum is σ = 90134842728. Its totient is φ = 90134842726.

The previous prime is 90134842663. The next prime is 90134842757. The reversal of 90134842727 is 72724843109.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90134842727 - 2⁶ = 90134842663 is a prime.

It is a super-4 number, since 4×90134842727⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90134842757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45067421363 + 45067421364.

It is an arithmetic number, because the mean of its divisors is an integer number (45067421364).

Almost surely, 2^90134842727 is an apocalyptic number.

90134842727 is a deficient number, since it is larger than the sum of its proper divisors (1).

90134842727 is an equidigital number, since it uses as much as digits as its factorization.

90134842727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 90134842727 in words is "ninety billion, one hundred thirty-four million, eight hundred forty-two thousand, seven hundred twenty-seven".