11002153520 has 20 divisors (see below), whose sum is σ = 25580007120. Its totient is φ = 4400861376.

The previous prime is 11002153469. The next prime is 11002153541. The reversal of 11002153520 is 2535120011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11002153492 and 11002153501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68763380 + ... + 68763539.

It is an arithmetic number, because the mean of its divisors is an integer number (1279000356).

Almost surely, 2^11002153520 is an apocalyptic number.

11002153520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002153520 is an abundant number, since it is smaller than the sum of its proper divisors (14577853600).

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

11002153520 is a wasteful number, since it uses less digits than its factorization.

11002153520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137526932 (or 137526926 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 11002153520 its reverse (2535120011), we get a palindrome (13537273531).

The spelling of 11002153520 in words is "eleven billion, two million, one hundred fifty-three thousand, five hundred twenty".