11256427770 has 128 divisors (see below), whose sum is σ = 33451646976. Its totient is φ = 2365203456.

The previous prime is 11256427747. The next prime is 11256427771. The reversal of 11256427770 is 7772465211.

It is a super-2 number, since 2×11256427770² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11256427771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116847 + ... + 190173.

It is an arithmetic number, because the mean of its divisors is an integer number (261340992).

Almost surely, 2^11256427770 is an apocalyptic number.

11256427770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11256427770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16725823488).

11256427770 is an abundant number, since it is smaller than the sum of its proper divisors (22195219206).

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

11256427770 is a wasteful number, since it uses less digits than its factorization.

11256427770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73404.

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 11256427770 in words is "eleven billion, two hundred fifty-six million, four hundred twenty-seven thousand, seven hundred seventy".