90175493487 has 8 divisors (see below), whose sum is σ = 122792161536. Its totient is φ = 58837910552.

The previous prime is 90175493479. The next prime is 90175493489. The reversal of 90175493487 is 78439457109.

It is a happy number.

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 90175493487 - 2³ = 90175493479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90175493489) 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, 319771113 + ... + 319771394.

It is an arithmetic number, because the mean of its divisors is an integer number (15349020192).

Almost surely, 2^90175493487 is an apocalyptic number.

90175493487 is a deficient number, since it is larger than the sum of its proper divisors (32616668049).

90175493487 is a wasteful number, since it uses less digits than its factorization.

90175493487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639542557.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 90175493487 in words is "ninety billion, one hundred seventy-five million, four hundred ninety-three thousand, four hundred eighty-seven".