40020231757665 has 8 divisors (see below), whose sum is σ = 64032370812288. Its totient is φ = 21344123604080.

The previous prime is 40020231757613. The next prime is 40020231757673. The reversal of 40020231757665 is 56675713202004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40020231757665 - 2⁶ = 40020231757601 is a prime.

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, 1334007725241 + ... + 1334007725270.

It is an arithmetic number, because the mean of its divisors is an integer number (8004046351536).

Almost surely, 2^{40020231757665} is an apocalyptic number.

It is an amenable number.

40020231757665 is a deficient number, since it is larger than the sum of its proper divisors (24012139054623).

40020231757665 is a wasteful number, since it uses less digits than its factorization.

40020231757665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668015450519.

The product of its (nonzero) digits is 2116800, while the sum is 48.

Adding to 40020231757665 its reverse (56675713202004), we get a palindrome (96695944959669).

The spelling of 40020231757665 in words is "forty trillion, twenty billion, two hundred thirty-one million, seven hundred fifty-seven thousand, six hundred sixty-five".