40261278484840 has 64 divisors (see below), whose sum is σ = 104692249094400. Its totient is φ = 13648767272448.

The previous prime is 40261278484811. The next prime is 40261278484859. The reversal of 40261278484840 is 4848487216204.

It is a super-2 number, since 2×40261278484840² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807785644 + ... + 807835483.

It is an arithmetic number, because the mean of its divisors is an integer number (1635816392100).

Almost surely, 2^{40261278484840} is an apocalyptic number.

40261278484840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40261278484840 is an abundant number, since it is smaller than the sum of its proper divisors (64430970609560).

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

40261278484840 is a wasteful number, since it uses less digits than its factorization.

40261278484840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615621234 (or 1615621230 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 58.

The spelling of 40261278484840 in words is "forty trillion, two hundred sixty-one billion, two hundred seventy-eight million, four hundred eighty-four thousand, eight hundred forty".