60904810521 has 45 divisors (see below), whose sum is σ = 96707868301. Its totient is φ = 38191091328.

The previous prime is 60904810511. The next prime is 60904810553. The reversal of 60904810521 is 12501840906.

The square root of 60904810521 is 246789.

It is a perfect power (a square), and thus also a powerful number.

60904810521 is a `hidden beast` number, since 6 + 0 + 90 + 48 + 1 + 0 + 521 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10198778121 + 50706032400 = 100989^2 + 225180^2 .

It is not a de Polignac number, because 60904810521 - 2⁵ = 60904810489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60904810511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 37757911 + ... + 37759523.

Almost surely, 2^60904810521 is an apocalyptic number.

60904810521 is the 246789-th square number.

60904810521 is the 123395-th centered octagonal number.

It is an amenable number.

60904810521 is a deficient number, since it is larger than the sum of its proper divisors (35803057780).

60904810521 is an frugal number, since it uses more digits than its factorization.

60904810521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Multiplying 60904810521 by its sum of digits (36), we get a square (2192573178756 = 1480734²).

The spelling of 60904810521 in words is "sixty billion, nine hundred four million, eight hundred ten thousand, five hundred twenty-one".