40163421661838 has 8 divisors (see below), whose sum is σ = 60291870380640. Its totient is φ = 20066131534960.

The previous prime is 40163421661807. The next prime is 40163421661841. The reversal of 40163421661838 is 83816612436104.

It is a happy number.

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

It is a super-2 number, since 2×40163421661838² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40163421661838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7789644758 + ... + 7789649913.

It is an arithmetic number, because the mean of its divisors is an integer number (7536483797580).

Almost surely, 2^{40163421661838} is an apocalyptic number.

40163421661838 is a deficient number, since it is larger than the sum of its proper divisors (20128448718802).

40163421661838 is a wasteful number, since it uses less digits than its factorization.

40163421661838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15579295962.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 40163421661838 in words is "forty trillion, one hundred sixty-three billion, four hundred twenty-one million, six hundred sixty-one thousand, eight hundred thirty-eight".