11510072020 has 24 divisors (see below), whose sum is σ = 25592984424. Its totient is φ = 4333203456.

The previous prime is 11510072011. The next prime is 11510072023. The reversal of 11510072020 is 2027001511.

It can be written as a sum of positive squares in 4 ways, for example, as 1622156176 + 9887915844 = 40276^2 + 99438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11510072023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16926237 + ... + 16926916.

It is an arithmetic number, because the mean of its divisors is an integer number (1066374351).

Almost surely, 2^11510072020 is an apocalyptic number.

11510072020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11510072020 is an abundant number, since it is smaller than the sum of its proper divisors (14082912404).

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

11510072020 is a wasteful number, since it uses less digits than its factorization.

11510072020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33853179 (or 33853177 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

Adding to 11510072020 its reverse (2027001511), we get a palindrome (13537073531).

The spelling of 11510072020 in words is "eleven billion, five hundred ten million, seventy-two thousand, twenty".