40819678211 has 4 divisors (see below), whose sum is σ = 43959653472. Its totient is φ = 37679702952.

The previous prime is 40819678183. The next prime is 40819678241. The reversal of 40819678211 is 11287691804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40819678211 is a prime.

It is a super-2 number, since 2×40819678211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40819678241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569987611 + ... + 1569987636.

It is an arithmetic number, because the mean of its divisors is an integer number (10989913368).

Almost surely, 2^40819678211 is an apocalyptic number.

40819678211 is a deficient number, since it is larger than the sum of its proper divisors (3139975261).

40819678211 is a wasteful number, since it uses less digits than its factorization.

40819678211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139975260.

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 40819678211 in words is "forty billion, eight hundred nineteen million, six hundred seventy-eight thousand, two hundred eleven".