90891849211 has 8 divisors (see below), whose sum is σ = 93134518848. Its totient is φ = 88650408000.

The previous prime is 90891849197. The next prime is 90891849221. The reversal of 90891849211 is 11294819809.

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 90891849211 - 2⁵ = 90891849179 is a prime.

It is a super-2 number, since 2×90891849211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90891849221) 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, 156400 + ... + 454141.

It is an arithmetic number, because the mean of its divisors is an integer number (11641814856).

Almost surely, 2^90891849211 is an apocalyptic number.

90891849211 is a deficient number, since it is larger than the sum of its proper divisors (2242669637).

90891849211 is a wasteful number, since it uses less digits than its factorization.

90891849211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614213.

The product of its (nonzero) digits is 373248, while the sum is 52.

The spelling of 90891849211 in words is "ninety billion, eight hundred ninety-one million, eight hundred forty-nine thousand, two hundred eleven".