11420428756 has 12 divisors (see below), whose sum is σ = 21802636800. Its totient is φ = 5191103960.

The previous prime is 11420428709. The next prime is 11420428757. The reversal of 11420428756 is 65782402411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420428757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129777556 + ... + 129777643.

It is an arithmetic number, because the mean of its divisors is an integer number (1816886400).

Almost surely, 2^11420428756 is an apocalyptic number.

It is an amenable number.

11420428756 is a deficient number, since it is larger than the sum of its proper divisors (10382208044).

11420428756 is a wasteful number, since it uses less digits than its factorization.

11420428756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259555214 (or 259555212 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 11420428756 in words is "eleven billion, four hundred twenty million, four hundred twenty-eight thousand, seven hundred fifty-six".