40485969808 has 10 divisors (see below), whose sum is σ = 78441566534. Its totient is φ = 20242984896.

The previous prime is 40485969787. The next prime is 40485969841. The reversal of 40485969808 is 80896958404.

It can be written as a sum of positive squares in only one way, i.e., 40468564224 + 17405584 = 201168^2 + 4172^2 .

It is a super-2 number, since 2×40485969808² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265186541 + ... + 1265186572.

Almost surely, 2^40485969808 is an apocalyptic number.

It is an amenable number.

40485969808 is a deficient number, since it is larger than the sum of its proper divisors (37955596726).

40485969808 is a wasteful number, since it uses less digits than its factorization.

40485969808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530373121 (or 2530373115 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 40485969808 in words is "forty billion, four hundred eighty-five million, nine hundred sixty-nine thousand, eight hundred eight".