40131754821865 has 8 divisors (see below), whose sum is σ = 55037835184320. Its totient is φ = 27518917592112.

The previous prime is 40131754821827. The next prime is 40131754821883. The reversal of 40131754821865 is 56812845713104.

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

It is a cyclic number.

It is not a de Polignac number, because 40131754821865 - 2⁷ = 40131754821737 is a prime.

It is a super-2 number, since 2×40131754821865² (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 7 ways as a sum of consecutive naturals, for example, 573310783135 + ... + 573310783204.

It is an arithmetic number, because the mean of its divisors is an integer number (6879729398040).

Almost surely, 2^{40131754821865} is an apocalyptic number.

It is an amenable number.

40131754821865 is a deficient number, since it is larger than the sum of its proper divisors (14906080362455).

40131754821865 is a wasteful number, since it uses less digits than its factorization.

40131754821865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146621566351.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 40131754821865 in words is "forty trillion, one hundred thirty-one billion, seven hundred fifty-four million, eight hundred twenty-one thousand, eight hundred sixty-five".