40378366368 has 144 divisors (see below), whose sum is σ = 117672530976. Its totient is φ = 13126740480.

The previous prime is 40378366367. The next prime is 40378366387. The reversal of 40378366368 is 86366387304.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×40378366368² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40378366361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9868003 + ... + 9872093.

It is an arithmetic number, because the mean of its divisors is an integer number (817170354).

Almost surely, 2^40378366368 is an apocalyptic number.

40378366368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40378366368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58836265488).

40378366368 is an abundant number, since it is smaller than the sum of its proper divisors (77294164608).

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

40378366368 is a wasteful number, since it uses less digits than its factorization.

40378366368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947 (or 4936 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 40378366368 in words is "forty billion, three hundred seventy-eight million, three hundred sixty-six thousand, three hundred sixty-eight".