90051384749 has 16 divisors (see below), whose sum is σ = 95774536704. Its totient is φ = 84543523200.

The previous prime is 90051384739. The next prime is 90051384757. The reversal of 90051384749 is 94748315009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90051384749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90051384697 and 90051384706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90051384739) 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 15 ways as a sum of consecutive naturals, for example, 188129 + ... + 464214.

It is an arithmetic number, because the mean of its divisors is an integer number (5985908544).

Almost surely, 2^90051384749 is an apocalyptic number.

It is an amenable number.

90051384749 is a deficient number, since it is larger than the sum of its proper divisors (5723151955).

90051384749 is a wasteful number, since it uses less digits than its factorization.

90051384749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652508.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 90051384749 in words is "ninety billion, fifty-one million, three hundred eighty-four thousand, seven hundred forty-nine".