90164554751 has 8 divisors (see below), whose sum is σ = 91442297280. Its totient is φ = 88887964032.

The previous prime is 90164554747. The next prime is 90164554757. The reversal of 90164554751 is 15745546109.

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 90164554751 - 2² = 90164554747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90164554696 and 90164554705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90164554757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129671 + ... + 444008.

It is an arithmetic number, because the mean of its divisors is an integer number (11430287160).

Almost surely, 2^90164554751 is an apocalyptic number.

90164554751 is a deficient number, since it is larger than the sum of its proper divisors (1277742529).

90164554751 is a wasteful number, since it uses less digits than its factorization.

90164554751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575905.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 90164554751 in words is "ninety billion, one hundred sixty-four million, five hundred fifty-four thousand, seven hundred fifty-one".