40400126064 has 60 divisors (see below), whose sum is σ = 113089808416. Its totient is φ = 13463663616.

The previous prime is 40400126059. The next prime is 40400126077. The reversal of 40400126064 is 46062100404.

40400126064 is a `hidden beast` number, since 4 + 0 + 40 + 0 + 12 + 606 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659424 + ... + 718080.

Almost surely, 2^40400126064 is an apocalyptic number.

It is an amenable number.

40400126064 is an abundant number, since it is smaller than the sum of its proper divisors (72689682352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40400126064 is a wasteful number, since it uses less digits than its factorization.

40400126064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63454 (or 63445 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 40400126064 its reverse (46062100404), we get a palindrome (86462226468).

It can be divided in two parts, 40400 and 126064, that added together give a square (166464 = 408²).

The spelling of 40400126064 in words is "forty billion, four hundred million, one hundred twenty-six thousand, sixty-four".