40873813491 has 32 divisors (see below), whose sum is σ = 63781632000. Its totient is φ = 23273181120.

The previous prime is 40873813489. The next prime is 40873813493. The reversal of 40873813491 is 19431837804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40873813489) and next prime (40873813493).

It is not a de Polignac number, because 40873813491 - 2¹ = 40873813489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40873813491.

It is not an unprimeable number, because it can be changed into a prime (40873813493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218470 + ... + 359828.

It is an arithmetic number, because the mean of its divisors is an integer number (1993176000).

Almost surely, 2^40873813491 is an apocalyptic number.

40873813491 is a deficient number, since it is larger than the sum of its proper divisors (22907818509).

40873813491 is a wasteful number, since it uses less digits than its factorization.

40873813491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141664 (or 141650 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 40873813491 in words is "forty billion, eight hundred seventy-three million, eight hundred thirteen thousand, four hundred ninety-one".