90776731549 has 8 divisors (see below), whose sum is σ = 106548750848. Its totient is φ = 75705690960.

The previous prime is 90776731531. The next prime is 90776731561. The reversal of 90776731549 is 94513767709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90776731549 - 2⁵ = 90776731517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90776731493 and 90776731502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90776731579) 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 in 7 ways as a sum of consecutive naturals, for example, 175244397 + ... + 175244914.

It is an arithmetic number, because the mean of its divisors is an integer number (13318593856).

Almost surely, 2^90776731549 is an apocalyptic number.

It is an amenable number.

90776731549 is a deficient number, since it is larger than the sum of its proper divisors (15772019299).

90776731549 is a wasteful number, since it uses less digits than its factorization.

90776731549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350489355.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 90776731549 in words is "ninety billion, seven hundred seventy-six million, seven hundred thirty-one thousand, five hundred forty-nine".