40147188811 has 4 divisors (see below), whose sum is σ = 40149201672. Its totient is φ = 40145175952.

The previous prime is 40147188749. The next prime is 40147188821. The reversal of 40147188811 is 11888174104.

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

It is a cyclic number.

It is not a de Polignac number, because 40147188811 - 2¹¹ = 40147186763 is a prime.

It is a super-2 number, since 2×40147188811² (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 (40147188821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976210 + ... + 1016503.

It is an arithmetic number, because the mean of its divisors is an integer number (10037300418).

Almost surely, 2^40147188811 is an apocalyptic number.

40147188811 is a deficient number, since it is larger than the sum of its proper divisors (2012861).

40147188811 is a wasteful number, since it uses less digits than its factorization.

40147188811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012860.

The product of its (nonzero) digits is 57344, while the sum is 43.

The spelling of 40147188811 in words is "forty billion, one hundred forty-seven million, one hundred eighty-eight thousand, eight hundred eleven".