11081621952 has 84 divisors (see below), whose sum is σ = 32622003336. Its totient is φ = 3594032640.

The previous prime is 11081621951. The next prime is 11081621953. The reversal of 11081621952 is 25912618011.

It is an interprime number because it is at equal distance from previous prime (11081621951) and next prime (11081621953).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11081621951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238674 + ... + 281297.

Almost surely, 2^11081621952 is an apocalyptic number.

11081621952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11081621952 is an abundant number, since it is smaller than the sum of its proper divisors (21540381384).

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

11081621952 is a wasteful number, since it uses less digits than its factorization.

11081621952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520026 (or 520013 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 11081621952 in words is "eleven billion, eighty-one million, six hundred twenty-one thousand, nine hundred fifty-two".