11520420452 has 6 divisors (see below), whose sum is σ = 20160735798. Its totient is φ = 5760210224.

The previous prime is 11520420449. The next prime is 11520420487. The reversal of 11520420452 is 25402402511.

It can be written as a sum of positive squares in only one way, i.e., 5820774436 + 5699646016 = 76294^2 + 75496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440052553 + ... + 1440052560.

It is an arithmetic number, because the mean of its divisors is an integer number (3360122633).

Almost surely, 2^11520420452 is an apocalyptic number.

It is an amenable number.

11520420452 is a deficient number, since it is larger than the sum of its proper divisors (8640315346).

11520420452 is a wasteful number, since it uses less digits than its factorization.

11520420452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880105117 (or 2880105115 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 11520420452 its reverse (25402402511), we get a palindrome (36922822963).

The spelling of 11520420452 in words is "eleven billion, five hundred twenty million, four hundred twenty thousand, four hundred fifty-two".