66632472050 has 72 divisors (see below), whose sum is σ = 129187796556. Its totient is φ = 25567476480.

The previous prime is 66632472031. The next prime is 66632472089. The reversal of 66632472050 is 5027423666.

It can be written as a sum of positive squares in 18 ways, for example, as 3155181241 + 63477290809 = 56171^2 + 251947^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66632471989 and 66632472007.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6596804 + ... + 6606896.

Almost surely, 2^66632472050 is an apocalyptic number.

66632472050 is a deficient number, since it is larger than the sum of its proper divisors (62555324506).

66632472050 is a wasteful number, since it uses less digits than its factorization.

66632472050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320 (or 10286 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 66632472050 in words is "sixty-six billion, six hundred thirty-two million, four hundred seventy-two thousand, fifty".