40001868312 has 128 divisors (see below), whose sum is σ = 119370585600. Its totient is φ = 10931632128.

The previous prime is 40001868271. The next prime is 40001868323. The reversal of 40001868312 is 21386810004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312208 + ... + 421280.

It is an arithmetic number, because the mean of its divisors is an integer number (932582700).

Almost surely, 2^40001868312 is an apocalyptic number.

40001868312 is a gapful number since it is divisible by the number (42) 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 40001868312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59685292800).

40001868312 is an abundant number, since it is smaller than the sum of its proper divisors (79368717288).

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

40001868312 is a wasteful number, since it uses less digits than its factorization.

40001868312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109185 (or 109181 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 40001868312 in words is "forty billion, one million, eight hundred sixty-eight thousand, three hundred twelve".