8111438040 has 64 divisors (see below), whose sum is σ = 25173439200. Its totient is φ = 2088461312.

The previous prime is 8111438039. The next prime is 8111438051. The reversal of 8111438040 is 408341118.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8111437989 and 8111438007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1161957 + ... + 1168916.

Almost surely, 2^8111438040 is an apocalyptic number.

It is an amenable number.

8111438040 is an abundant number, since it is smaller than the sum of its proper divisors (17062001160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8111438040 is a wasteful number, since it uses less digits than its factorization.

8111438040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330916 (or 2330912 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 8111438040 is about 90063.5222495767. The cubic root of 8111438040 is about 2009.2437143854.

Adding to 8111438040 its reverse (408341118), we get a palindrome (8519779158).

The spelling of 8111438040 in words is "eight billion, one hundred eleven million, four hundred thirty-eight thousand, forty".