40678378690 has 8 divisors (see below), whose sum is σ = 73221081660. Its totient is φ = 16271351472.

The previous prime is 40678378669. The next prime is 40678378721. The reversal of 40678378690 is 9687387604.

It is a happy number.

40678378690 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 36619032321 + 4059346369 = 191361^2 + 63713^2 .

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

It is a super-2 number, since 2×40678378690² (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, 2033918925 + ... + 2033918944.

Almost surely, 2^40678378690 is an apocalyptic number.

40678378690 is a deficient number, since it is larger than the sum of its proper divisors (32542702970).

40678378690 is a wasteful number, since it uses less digits than its factorization.

40678378690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067837876.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 40678378690 in words is "forty billion, six hundred seventy-eight million, three hundred seventy-eight thousand, six hundred ninety".