91433168327087 has 4 divisors (see below), whose sum is σ = 93158322446520. Its totient is φ = 89708014207656.

The previous prime is 91433168327077. The next prime is 91433168327147. The reversal of 91433168327087 is 78072386133419.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91433168327087 - 2¹⁴ = 91433168310703 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 (91433168327077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862577059637 + ... + 862577059742.

It is an arithmetic number, because the mean of its divisors is an integer number (23289580611630).

Almost surely, 2^{91433168327087} is an apocalyptic number.

91433168327087 is a deficient number, since it is larger than the sum of its proper divisors (1725154119433).

91433168327087 is a wasteful number, since it uses less digits than its factorization.

91433168327087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725154119432.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 91433168327087 in words is "ninety-one trillion, four hundred thirty-three billion, one hundred sixty-eight million, three hundred twenty-seven thousand, eighty-seven".