40851595381818 has 16 divisors (see below), whose sum is σ = 87988051591776. Its totient is φ = 12569721655920.

The previous prime is 40851595381777. The next prime is 40851595381901. The reversal of 40851595381818 is 81818359515804.

It is a happy number.

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, 261869201088 + ... + 261869201243.

It is an arithmetic number, because the mean of its divisors is an integer number (5499253224486).

Almost surely, 2^{40851595381818} is an apocalyptic number.

40851595381818 is an abundant number, since it is smaller than the sum of its proper divisors (47136456209958).

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

40851595381818 is a wasteful number, since it uses less digits than its factorization.

40851595381818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523738402349.

The product of its (nonzero) digits is 55296000, while the sum is 66.

The spelling of 40851595381818 in words is "forty trillion, eight hundred fifty-one billion, five hundred ninety-five million, three hundred eighty-one thousand, eight hundred eighteen".