40078007810 has 8 divisors (see below), whose sum is σ = 72140414076. Its totient is φ = 16031203120.

The previous prime is 40078007803. The next prime is 40078007813. The reversal of 40078007810 is 1870087004.

It can be written as a sum of positive squares in 2 ways, for example, as 38016030529 + 2061977281 = 194977^2 + 45409^2 .

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

It is a super-2 number, since 2×40078007810² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40078007813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003900381 + ... + 2003900400.

Almost surely, 2^40078007810 is an apocalyptic number.

40078007810 is a deficient number, since it is larger than the sum of its proper divisors (32062406266).

40078007810 is a wasteful number, since it uses less digits than its factorization.

40078007810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007800788.

The product of its (nonzero) digits is 12544, while the sum is 35.

The spelling of 40078007810 in words is "forty billion, seventy-eight million, seven thousand, eight hundred ten".