40387610109 has 192 divisors, whose sum is σ = 72303943680. Its totient is φ = 19813248000.

The previous prime is 40387610099. The next prime is 40387610111. The reversal of 40387610109 is 90101678304.

It is not a de Polignac number, because 40387610109 - 2⁸ = 40387609853 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40387610009) 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 191 ways as a sum of consecutive naturals, for example, 511235532 + ... + 511235610.

It is an arithmetic number, because the mean of its divisors is an integer number (376583040).

Almost surely, 2^40387610109 is an apocalyptic number.

40387610109 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

40387610109 is a deficient number, since it is larger than the sum of its proper divisors (31916333571).

40387610109 is a wasteful number, since it uses less digits than its factorization.

40387610109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 40387610109 in words is "forty billion, three hundred eighty-seven million, six hundred ten thousand, one hundred nine".