4209521591052 has 48 divisors (see below), whose sum is σ = 10913708467200. Its totient is φ = 1403156638800.

The previous prime is 4209521590969. The next prime is 4209521591153. The reversal of 4209521591052 is 2501951259024.

4209521591052 is a `hidden beast` number, since 4 + 2 + 0 + 9 + 5 + 2 + 1 + 591 + 0 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4209521590989 and 4209521591007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11057677 + ... + 11432027.

It is an arithmetic number, because the mean of its divisors is an integer number (227368926400).

Almost surely, 2^{4209521591052} is an apocalyptic number.

It is an amenable number.

4209521591052 is an abundant number, since it is smaller than the sum of its proper divisors (6704186876148).

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

4209521591052 is a wasteful number, since it uses less digits than its factorization.

4209521591052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478483 (or 478475 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 4209521591052 in words is "four trillion, two hundred nine billion, five hundred twenty-one million, five hundred ninety-one thousand, fifty-two".