11286421556 has 6 divisors (see below), whose sum is σ = 19751237730. Its totient is φ = 5643210776.

The previous prime is 11286421541. The next prime is 11286421571. The reversal of 11286421556 is 65512468211.

It is an interprime number because it is at equal distance from previous prime (11286421541) and next prime (11286421571).

It can be written as a sum of positive squares in only one way, i.e., 10703971600 + 582449956 = 103460^2 + 24134^2 .

It is a super-2 number, since 2×11286421556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410802691 + ... + 1410802698.

It is an arithmetic number, because the mean of its divisors is an integer number (3291872955).

Almost surely, 2^11286421556 is an apocalyptic number.

It is an amenable number.

11286421556 is a deficient number, since it is larger than the sum of its proper divisors (8464816174).

11286421556 is a wasteful number, since it uses less digits than its factorization.

11286421556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821605393 (or 2821605391 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

Adding to 11286421556 its reverse (65512468211), we get a palindrome (76798889767).

The spelling of 11286421556 in words is "eleven billion, two hundred eighty-six million, four hundred twenty-one thousand, five hundred fifty-six".