40158236465866 has 16 divisors (see below), whose sum is σ = 60372671544000. Its totient is φ = 20034014334208.

The previous prime is 40158236465861. The next prime is 40158236465869. The reversal of 40158236465866 is 66856463285104.

It is a happy number.

It is a super-2 number, since 2×40158236465866² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40158236465798 and 40158236465807.

It is not an unprimeable number, because it can be changed into a prime (40158236465861) 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, 49674195 + ... + 50476153.

It is an arithmetic number, because the mean of its divisors is an integer number (3773291971500).

Almost surely, 2^{40158236465866} is an apocalyptic number.

40158236465866 is a deficient number, since it is larger than the sum of its proper divisors (20214435078134).

40158236465866 is a wasteful number, since it uses less digits than its factorization.

40158236465866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858173.

The product of its (nonzero) digits is 199065600, while the sum is 64.

The spelling of 40158236465866 in words is "forty trillion, one hundred fifty-eight billion, two hundred thirty-six million, four hundred sixty-five thousand, eight hundred sixty-six".