11978417708 has 12 divisors (see below), whose sum is σ = 20982221400. Its totient is φ = 5983497312.

The previous prime is 11978417699. The next prime is 11978417749. The reversal of 11978417708 is 80771487911.

It is a self number, because there is not a number n which added to its sum of digits gives 11978417708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423166 + ... + 1431557.

It is an arithmetic number, because the mean of its divisors is an integer number (1748518450).

Almost surely, 2^11978417708 is an apocalyptic number.

It is an amenable number.

11978417708 is a deficient number, since it is larger than the sum of its proper divisors (9003803692).

11978417708 is a wasteful number, since it uses less digits than its factorization.

11978417708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855776 (or 2855774 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 53.

The spelling of 11978417708 in words is "eleven billion, nine hundred seventy-eight million, four hundred seventeen thousand, seven hundred eight".