90378461717 has 8 divisors (see below), whose sum is σ = 100731412800. Its totient is φ = 80585129664.

The previous prime is 90378461711. The next prime is 90378461731. The reversal of 90378461717 is 71716487309.

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 90378461717 - 2²² = 90374267413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90378461711) 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, 139904417 + ... + 139905062.

It is an arithmetic number, because the mean of its divisors is an integer number (12591426600).

Almost surely, 2^90378461717 is an apocalyptic number.

It is an amenable number.

90378461717 is a deficient number, since it is larger than the sum of its proper divisors (10352951083).

90378461717 is a wasteful number, since it uses less digits than its factorization.

90378461717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279809515.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 90378461717 in words is "ninety billion, three hundred seventy-eight million, four hundred sixty-one thousand, seven hundred seventeen".