891671272362 has 96 divisors (see below), whose sum is σ = 2117714363856. Its totient is φ = 269474688000.

The previous prime is 891671272357. The next prime is 891671272379. The reversal of 891671272362 is 263272176198.

It is a happy number.

891671272362 is a `hidden beast` number, since 8 + 9 + 1 + 6 + 7 + 1 + 272 + 362 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 174873676041 + 716797596321 = 418179^2 + 846639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 891671272299 and 891671272308.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9961518 + ... + 10050630.

Almost surely, 2^891671272362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 891671272362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058857181928).

891671272362 is an abundant number, since it is smaller than the sum of its proper divisors (1226043091494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

891671272362 is a wasteful number, since it uses less digits than its factorization.

891671272362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89896 (or 89893 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 891671272362 in words is "eight hundred ninety-one billion, six hundred seventy-one million, two hundred seventy-two thousand, three hundred sixty-two".