67400404040 has 32 divisors (see below), whose sum is σ = 151661394360. Its totient is φ = 26958297600.

The previous prime is 67400404021. The next prime is 67400404121. The reversal of 67400404040 is 4040400476.

It can be written as a sum of positive squares in 4 ways, for example, as 65959594276 + 1440809764 = 256826^2 + 37958^2 .

67400404040 is a modest number, since divided by 404040 gives 67400 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 67400403994 and 67400404012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627050 + ... + 726630.

Almost surely, 2^67400404040 is an apocalyptic number.

It is an amenable number.

67400404040 is an abundant number, since it is smaller than the sum of its proper divisors (84260990320).

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

67400404040 is a wasteful number, since it uses less digits than its factorization.

67400404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116513 (or 116509 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The spelling of 67400404040 in words is "sixty-seven billion, four hundred million, four hundred four thousand, forty".