40137068578 has 24 divisors (see below), whose sum is σ = 63912406212. Its totient is φ = 18839181312.

The previous prime is 40137068549. The next prime is 40137068633. The reversal of 40137068578 is 87586073104.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 38037871089 + 2099197489 = 195033^2 + 45817^2 .

It is a super-2 number, since 2×40137068578² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5684026 + ... + 5691082.

Almost surely, 2^40137068578 is an apocalyptic number.

40137068578 is a deficient number, since it is larger than the sum of its proper divisors (23775337634).

40137068578 is an equidigital number, since it uses as much as digits as its factorization.

40137068578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7894 (or 7485 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 40137068578 in words is "forty billion, one hundred thirty-seven million, sixty-eight thousand, five hundred seventy-eight".