40056161149 has 4 divisors (see below), whose sum is σ = 40115680636. Its totient is φ = 39996641664.

The previous prime is 40056161147. The next prime is 40056161177. The reversal of 40056161149 is 94116165004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11397057049 + 28659104100 = 106757^2 + 169290^2 .

It is a cyclic number.

It is not a de Polignac number, because 40056161149 - 2¹ = 40056161147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056161147) 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 3 ways as a sum of consecutive naturals, for example, 29758734 + ... + 29760079.

It is an arithmetic number, because the mean of its divisors is an integer number (10028920159).

Almost surely, 2^40056161149 is an apocalyptic number.

It is an amenable number.

40056161149 is a deficient number, since it is larger than the sum of its proper divisors (59519487).

40056161149 is an equidigital number, since it uses as much as digits as its factorization.

40056161149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59519486.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 40056161149 in words is "forty billion, fifty-six million, one hundred sixty-one thousand, one hundred forty-nine".