891291002032 has 20 divisors (see below), whose sum is σ = 1726891027456. Its totient is φ = 445641704640.

The previous prime is 891291002011. The next prime is 891291002047. The reversal of 891291002032 is 230200192198.

It is a junction number, because it is equal to n+sod(n) for n = 891291001982 and 891291002000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275857 + ... + 3537487.

Almost surely, 2^891291002032 is an apocalyptic number.

It is an amenable number.

891291002032 is a deficient number, since it is larger than the sum of its proper divisors (835600025424).

891291002032 is a wasteful number, since it uses less digits than its factorization.

891291002032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474556 (or 474550 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 891291002032 in words is "eight hundred ninety-one billion, two hundred ninety-one million, two thousand, thirty-two".