40238687354 has 4 divisors (see below), whose sum is σ = 60358031034. Its totient is φ = 20119343676.

The previous prime is 40238687339. The next prime is 40238687371. The reversal of 40238687354 is 45378683204.

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

It can be written as a sum of positive squares in only one way, i.e., 28115576329 + 12123111025 = 167677^2 + 110105^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10059671837 + ... + 10059671840.

Almost surely, 2^40238687354 is an apocalyptic number.

40238687354 is a deficient number, since it is larger than the sum of its proper divisors (20119343680).

40238687354 is a wasteful number, since it uses less digits than its factorization.

40238687354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20119343679.

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 40238687354 in words is "forty billion, two hundred thirty-eight million, six hundred eighty-seven thousand, three hundred fifty-four".