40846311891 has 48 divisors (see below), whose sum is σ = 77430263040. Its totient is φ = 20102074560.

The previous prime is 40846311871. The next prime is 40846311911. The reversal of 40846311891 is 19811364804.

40846311891 is a `hidden beast` number, since 4 + 0 + 8 + 4 + 631 + 1 + 8 + 9 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (40846311871) and next prime (40846311911).

It is not a de Polignac number, because 40846311891 - 2⁹ = 40846311379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40846311841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1537920 + ... + 1564253.

It is an arithmetic number, because the mean of its divisors is an integer number (1613130480).

Almost surely, 2^40846311891 is an apocalyptic number.

40846311891 is a deficient number, since it is larger than the sum of its proper divisors (36583951149).

40846311891 is a wasteful number, since it uses less digits than its factorization.

40846311891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102216 (or 3102213 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 40846311891 in words is "forty billion, eight hundred forty-six million, three hundred eleven thousand, eight hundred ninety-one".