40156632149 has 2 divisors, whose sum is σ = 40156632150. Its totient is φ = 40156632148.

The previous prime is 40156632071. The next prime is 40156632169. The reversal of 40156632149 is 94123665104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20261529649 + 19895102500 = 142343^2 + 141050^2 .

It is a cyclic number.

It is not a de Polignac number, because 40156632149 - 2¹⁶ = 40156566613 is a prime.

It is a super-2 number, since 2×40156632149² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40156632169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078316074 + 20078316075.

It is an arithmetic number, because the mean of its divisors is an integer number (20078316075).

Almost surely, 2^40156632149 is an apocalyptic number.

It is an amenable number.

40156632149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40156632149 is an equidigital number, since it uses as much as digits as its factorization.

40156632149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 40156632149 in words is "forty billion, one hundred fifty-six million, six hundred thirty-two thousand, one hundred forty-nine".