90138387743 has 8 divisors (see below), whose sum is σ = 93274802400. Its totient is φ = 87003852768.

The previous prime is 90138387727. The next prime is 90138387763. The reversal of 90138387743 is 34778383109.

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 90138387743 - 2⁴ = 90138387727 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 (90138387763) 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, 371996 + ... + 564497.

It is an arithmetic number, because the mean of its divisors is an integer number (11659350300).

Almost surely, 2^90138387743 is an apocalyptic number.

90138387743 is a deficient number, since it is larger than the sum of its proper divisors (3136414657).

90138387743 is a wasteful number, since it uses less digits than its factorization.

90138387743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939841.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 90138387743 in words is "ninety billion, one hundred thirty-eight million, three hundred eighty-seven thousand, seven hundred forty-three".