40143238378 has 8 divisors (see below), whose sum is σ = 60222560580. Its totient is φ = 20069051520.

The previous prime is 40143238339. The next prime is 40143238381. The reversal of 40143238378 is 87383234104.

40143238378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39280465249 + 862773129 = 198193^2 + 29373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40143238378² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264233 + ... + 1295596.

Almost surely, 2^40143238378 is an apocalyptic number.

40143238378 is a deficient number, since it is larger than the sum of its proper divisors (20079322202).

40143238378 is a wasteful number, since it uses less digits than its factorization.

40143238378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567672.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 40143238378 in words is "forty billion, one hundred forty-three million, two hundred thirty-eight thousand, three hundred seventy-eight".