11978623107 has 48 divisors (see below), whose sum is σ = 19507577856. Its totient is φ = 7017192000.

The previous prime is 11978623081. The next prime is 11978623183. The reversal of 11978623107 is 70132687911.

11978623107 is a `hidden beast` number, since 1 + 1 + 9 + 7 + 8 + 623 + 10 + 7 = 666.

11978623107 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 11978623107 - 2¹⁰ = 11978622083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11978623807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3352632 + ... + 3356202.

It is an arithmetic number, because the mean of its divisors is an integer number (406407872).

Almost surely, 2^11978623107 is an apocalyptic number.

11978623107 is a deficient number, since it is larger than the sum of its proper divisors (7528954749).

11978623107 is a wasteful number, since it uses less digits than its factorization.

11978623107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4709 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 11978623107 in words is "eleven billion, nine hundred seventy-eight million, six hundred twenty-three thousand, one hundred seven".