90874329411891 has 16 divisors (see below), whose sum is σ = 126435300860160. Its totient is φ = 57948182587680.

The previous prime is 90874329411493. The next prime is 90874329412297. The reversal of 90874329411891 is 19811492347809.

It is not a de Polignac number, because 90874329411891 - 2¹³ = 90874329403699 is a prime.

It is a lonely number, since its distance to closest prime (90874329411493) sets a new record.

It is not an unprimeable number, because it can be changed into a prime (90874329411191) 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 15 ways as a sum of consecutive naturals, for example, 1468345 + ... + 13561146.

It is an arithmetic number, because the mean of its divisors is an integer number (7902206303760).

Almost surely, 2^{90874329411891} is an apocalyptic number.

90874329411891 is a deficient number, since it is larger than the sum of its proper divisors (35560971448269).

90874329411891 is a wasteful number, since it uses less digits than its factorization.

90874329411891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15117146.

The product of its (nonzero) digits is 31352832, while the sum is 66.

The spelling of 90874329411891 in words is "ninety trillion, eight hundred seventy-four billion, three hundred twenty-nine million, four hundred eleven thousand, eight hundred ninety-one".