11040001020 has 72 divisors (see below), whose sum is σ = 33504001440. Its totient is φ = 2942593920.

The previous prime is 11040000967. The next prime is 11040001087. The reversal of 11040001020 is 2010004011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11040000993 and 11040001011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394905 + ... + 421935.

Almost surely, 2^11040001020 is an apocalyptic number.

11040001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11040001020 is an abundant number, since it is smaller than the sum of its proper divisors (22464000420).

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

11040001020 is a wasteful number, since it uses less digits than its factorization.

11040001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29315 (or 29310 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11040001020 its reverse (2010004011), we get a palindrome (13050005031).

The spelling of 11040001020 in words is "eleven billion, forty million, one thousand, twenty".