20404524356 has 24 divisors (see below), whose sum is σ = 36087682680. Its totient is φ = 10094077952.

The previous prime is 20404524341. The next prime is 20404524457. The reversal of 20404524356 is 65342540402.

It can be written as a sum of positive squares in 4 ways, for example, as 2345464900 + 18059059456 = 48430^2 + 134384^2 .

It is a super-2 number, since 2×20404524356² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217520 + ... + 296856.

It is an arithmetic number, because the mean of its divisors is an integer number (1503653445).

Almost surely, 2^20404524356 is an apocalyptic number.

It is an amenable number.

20404524356 is a deficient number, since it is larger than the sum of its proper divisors (15683158324).

20404524356 is a wasteful number, since it uses less digits than its factorization.

20404524356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80023 (or 80021 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 20404524356 in words is "twenty billion, four hundred four million, five hundred twenty-four thousand, three hundred fifty-six".