11913076978 has 16 divisors (see below), whose sum is σ = 20640839904. Its totient is φ = 5096503360.

The previous prime is 11913076949. The next prime is 11913076999. The reversal of 11913076978 is 87967031911.

It is a super-2 number, since 2×11913076978² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15926200 + ... + 15926947.

It is an arithmetic number, because the mean of its divisors is an integer number (1290052494).

Almost surely, 2^11913076978 is an apocalyptic number.

11913076978 is a deficient number, since it is larger than the sum of its proper divisors (8727762926).

11913076978 is a wasteful number, since it uses less digits than its factorization.

11913076978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31853177.

The product of its (nonzero) digits is 571536, while the sum is 52.

The spelling of 11913076978 in words is "eleven billion, nine hundred thirteen million, seventy-six thousand, nine hundred seventy-eight".