15378661107 has 16 divisors (see below), whose sum is σ = 23169360000. Its totient is φ = 10078669512.

The previous prime is 15378661099. The next prime is 15378661121. The reversal of 15378661107 is 70116687351.

15378661107 is a `hidden beast` number, since 1 + 537 + 8 + 6 + 6 + 1 + 107 = 666.

It is not a de Polignac number, because 15378661107 - 2³ = 15378661099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15378661157) 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, 4825357 + ... + 4828542.

It is an arithmetic number, because the mean of its divisors is an integer number (1448085000).

Almost surely, 2^15378661107 is an apocalyptic number.

15378661107 is a deficient number, since it is larger than the sum of its proper divisors (7790698893).

15378661107 is an equidigital number, since it uses as much as digits as its factorization.

15378661107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9653967 (or 9653961 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 15378661107 in words is "fifteen billion, three hundred seventy-eight million, six hundred sixty-one thousand, one hundred seven".