40518618244544 has 168 divisors, whose sum is σ = 98080778305920. Its totient is φ = 16421842022400.

The previous prime is 40518618244523. The next prime is 40518618244583. The reversal of 40518618244544 is 44544281681504.

It is a self number, because there is not a number n which added to its sum of digits gives 40518618244544.

It is a congruent number.

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, 1375172 + ... + 9106499.

Almost surely, 2^{40518618244544} is an apocalyptic number.

40518618244544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40518618244544 is an abundant number, since it is smaller than the sum of its proper divisors (57562160061376).

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

40518618244544 is a wasteful number, since it uses less digits than its factorization.

40518618244544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481747 (or 10481720 counting only the distinct ones).

The product of its (nonzero) digits is 19660800, while the sum is 56.

The spelling of 40518618244544 in words is "forty trillion, five hundred eighteen billion, six hundred eighteen million, two hundred forty-four thousand, five hundred forty-four".