40115664065643 has 8 divisors (see below), whose sum is σ = 56302686408000. Its totient is φ = 25336208883528.

The previous prime is 40115664065621. The next prime is 40115664065677. The reversal of 40115664065643 is 34656046651104.

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

It is not a de Polignac number, because 40115664065643 - 2¹⁷ = 40115663934571 is a prime.

It is a super-3 number, since 3×40115664065643³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40115664060643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351891789993 + ... + 351891790106.

It is an arithmetic number, because the mean of its divisors is an integer number (7037835801000).

Almost surely, 2^{40115664065643} is an apocalyptic number.

40115664065643 is a deficient number, since it is larger than the sum of its proper divisors (16187022342357).

40115664065643 is a wasteful number, since it uses less digits than its factorization.

40115664065643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703783580121.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 40115664065643 in words is "forty trillion, one hundred fifteen billion, six hundred sixty-four million, sixty-five thousand, six hundred forty-three".