40098785664815 has 4 divisors (see below), whose sum is σ = 48118542797784. Its totient is φ = 32079028531848.

The previous prime is 40098785664799. The next prime is 40098785664881. The reversal of 40098785664815 is 51846658789004.

40098785664815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40098785664815 - 2⁴ = 40098785664799 is a prime.

It is a super-2 number, since 2×40098785664815² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4009878566477 + ... + 4009878566486.

It is an arithmetic number, because the mean of its divisors is an integer number (12029635699446).

Almost surely, 2^{40098785664815} is an apocalyptic number.

40098785664815 is a deficient number, since it is larger than the sum of its proper divisors (8019757132969).

40098785664815 is an equidigital number, since it uses as much as digits as its factorization.

40098785664815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019757132968.

The product of its (nonzero) digits is 464486400, while the sum is 71.

The spelling of 40098785664815 in words is "forty trillion, ninety-eight billion, seven hundred eighty-five million, six hundred sixty-four thousand, eight hundred fifteen".