11281492656 has 360 divisors, whose sum is σ = 37927509984. Its totient is φ = 3119800320.

The previous prime is 11281492643. The next prime is 11281492669. The reversal of 11281492656 is 65629418211.

It is an interprime number because it is at equal distance from previous prime (11281492643) and next prime (11281492669).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 36274741 + ... + 36275051.

Almost surely, 2^11281492656 is an apocalyptic number.

11281492656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11281492656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18963754992).

11281492656 is an abundant number, since it is smaller than the sum of its proper divisors (26646017328).

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

11281492656 is a wasteful number, since it uses less digits than its factorization.

11281492656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 473 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 11281492656 in words is "eleven billion, two hundred eighty-one million, four hundred ninety-two thousand, six hundred fifty-six".