90187368644842 has 8 divisors (see below), whose sum is σ = 154606917676896. Its totient is φ = 38651729419212.

The previous prime is 90187368644839. The next prime is 90187368644873. The reversal of 90187368644842 is 24844686378109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90187368644842² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3220977451588 + ... + 3220977451615.

It is an arithmetic number, because the mean of its divisors is an integer number (19325864709612).

Almost surely, 2^{90187368644842} is an apocalyptic number.

90187368644842 is a deficient number, since it is larger than the sum of its proper divisors (64419549032054).

90187368644842 is a wasteful number, since it uses less digits than its factorization.

90187368644842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441954903212.

The product of its (nonzero) digits is 445906944, while the sum is 70.

The spelling of 90187368644842 in words is "ninety trillion, one hundred eighty-seven billion, three hundred sixty-eight million, six hundred forty-four thousand, eight hundred forty-two".