40121055868168 has 64 divisors (see below), whose sum is σ = 84069017061120. Its totient is φ = 17791700467200.

The previous prime is 40121055868133. The next prime is 40121055868171. The reversal of 40121055868168 is 86186855012104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322539921 + ... + 322664287.

It is an arithmetic number, because the mean of its divisors is an integer number (1313578391580).

Almost surely, 2^{40121055868168} is an apocalyptic number.

It is an amenable number.

40121055868168 is an abundant number, since it is smaller than the sum of its proper divisors (43947961192952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40121055868168 is a wasteful number, since it uses less digits than its factorization.

40121055868168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213838 (or 213834 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 55.

The spelling of 40121055868168 in words is "forty trillion, one hundred twenty-one billion, fifty-five million, eight hundred sixty-eight thousand, one hundred sixty-eight".