11125746978 has 16 divisors (see below), whose sum is σ = 22292179680. Its totient is φ = 3701801376.

The previous prime is 11125746959. The next prime is 11125746991. The reversal of 11125746978 is 87964752111.

It is a super-2 number, since 2×11125746978² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11125746978.

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, 1691683 + ... + 1698246.

It is an arithmetic number, because the mean of its divisors is an integer number (1393261230).

Almost surely, 2^11125746978 is an apocalyptic number.

11125746978 is an abundant number, since it is smaller than the sum of its proper divisors (11166432702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11125746978 is a wasteful number, since it uses less digits than its factorization.

11125746978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390481.

The product of its digits is 846720, while the sum is 51.

The spelling of 11125746978 in words is "eleven billion, one hundred twenty-five million, seven hundred forty-six thousand, nine hundred seventy-eight".