11145628780 has 48 divisors (see below), whose sum is σ = 27497754144. Its totient is φ = 3741189120.

The previous prime is 11145628771. The next prime is 11145628789. The reversal of 11145628780 is 8782654111.

It is an interprime number because it is at equal distance from previous prime (11145628771) and next prime (11145628789).

It is not an unprimeable number, because it can be changed into a prime (11145628789) 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, 1945677 + ... + 1951396.

It is an arithmetic number, because the mean of its divisors is an integer number (572869878).

Almost surely, 2^11145628780 is an apocalyptic number.

11145628780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11145628780 is an abundant number, since it is smaller than the sum of its proper divisors (16352125364).

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

11145628780 is a wasteful number, since it uses less digits than its factorization.

11145628780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897106 (or 3897104 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 11145628780 in words is "eleven billion, one hundred forty-five million, six hundred twenty-eight thousand, seven hundred eighty".