40631026320 has 120 divisors (see below), whose sum is σ = 137859494136. Its totient is φ = 10723221504.

The previous prime is 40631026309. The next prime is 40631026333. The reversal of 40631026320 is 2362013604.

40631026320 is a `hidden beast` number, since 4 + 0 + 6 + 310 + 26 + 320 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7817616 + 40623208704 = 2796^2 + 201552^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221047 + ... + 360726.

Almost surely, 2^40631026320 is an apocalyptic number.

40631026320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40631026320 is an abundant number, since it is smaller than the sum of its proper divisors (97228467816).

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

40631026320 is a wasteful number, since it uses less digits than its factorization.

40631026320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581889 (or 581880 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 40631026320 its reverse (2362013604), we get a palindrome (42993039924).

The spelling of 40631026320 in words is "forty billion, six hundred thirty-one million, twenty-six thousand, three hundred twenty".