40378338837 has 16 divisors (see below), whose sum is σ = 59989236480. Its totient is φ = 26842628736.

The previous prime is 40378338823. The next prime is 40378338907. The reversal of 40378338837 is 73883387304.

40378338837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40378338837 - 2⁷ = 40378338709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40378338337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2108733 + ... + 2127794.

It is an arithmetic number, because the mean of its divisors is an integer number (3749327280).

Almost surely, 2^40378338837 is an apocalyptic number.

It is an amenable number.

40378338837 is a deficient number, since it is larger than the sum of its proper divisors (19610897643).

40378338837 is a wasteful number, since it uses less digits than its factorization.

40378338837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236889 (or 4236883 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 40378338837 in words is "forty billion, three hundred seventy-eight million, three hundred thirty-eight thousand, eight hundred thirty-seven".