891914252011 has 4 divisors (see below), whose sum is σ = 938857107400. Its totient is φ = 844971396624.

The previous prime is 891914251999. The next prime is 891914252023. The reversal of 891914252011 is 110252419198.

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

It is an interprime number because it is at equal distance from previous prime (891914251999) and next prime (891914252023).

It is a cyclic number.

It is not a de Polignac number, because 891914252011 - 2⁷ = 891914251883 is a prime.

It is a super-2 number, since 2×891914252011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891914252081) 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, 23471427666 + ... + 23471427703.

It is an arithmetic number, because the mean of its divisors is an integer number (234714276850).

Almost surely, 2^891914252011 is an apocalyptic number.

891914252011 is a deficient number, since it is larger than the sum of its proper divisors (46942855389).

891914252011 is a wasteful number, since it uses less digits than its factorization.

891914252011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46942855388.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 891914252011 in words is "eight hundred ninety-one billion, nine hundred fourteen million, two hundred fifty-two thousand, eleven".