40244156129 has 2 divisors, whose sum is σ = 40244156130. Its totient is φ = 40244156128.

The previous prime is 40244156123. The next prime is 40244156179. The reversal of 40244156129 is 92165144204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39178264225 + 1065891904 = 197935^2 + 32648^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244156129 - 2¹² = 40244152033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40244156092 and 40244156101.

It is not a weakly prime, because it can be changed into another prime (40244156123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122078064 + 20122078065.

It is an arithmetic number, because the mean of its divisors is an integer number (20122078065).

Almost surely, 2^40244156129 is an apocalyptic number.

It is an amenable number.

40244156129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244156129 is an equidigital number, since it uses as much as digits as its factorization.

40244156129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 40244156129 in words is "forty billion, two hundred forty-four million, one hundred fifty-six thousand, one hundred twenty-nine".