40157433409 has 2 divisors, whose sum is σ = 40157433410. Its totient is φ = 40157433408.

The previous prime is 40157433397. The next prime is 40157433431. The reversal of 40157433409 is 90433475104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23977593409 + 16179840000 = 154847^2 + 127200^2 .

It is a cyclic number.

It is not a de Polignac number, because 40157433409 - 2⁵ = 40157433377 is a prime.

It is a super-2 number, since 2×40157433409² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40157433469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078716704 + 20078716705.

It is an arithmetic number, because the mean of its divisors is an integer number (20078716705).

Almost surely, 2^40157433409 is an apocalyptic number.

It is an amenable number.

40157433409 is a deficient number, since it is larger than the sum of its proper divisors (1).

40157433409 is an equidigital number, since it uses as much as digits as its factorization.

40157433409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 40157433409 in words is "forty billion, one hundred fifty-seven million, four hundred thirty-three thousand, four hundred nine".