40436011649 has 8 divisors (see below), whose sum is σ = 46029926592. Its totient is φ = 35161749040.

The previous prime is 40436011621. The next prime is 40436011669. The reversal of 40436011649 is 94611063404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-40436011649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40436011619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79912814 + ... + 79913319.

It is an arithmetic number, because the mean of its divisors is an integer number (5753740824).

Almost surely, 2^40436011649 is an apocalyptic number.

It is an amenable number.

40436011649 is a deficient number, since it is larger than the sum of its proper divisors (5593914943).

40436011649 is a wasteful number, since it uses less digits than its factorization.

40436011649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159826167.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 40436011649 in words is "forty billion, four hundred thirty-six million, eleven thousand, six hundred forty-nine".