66824804526736 has 45 divisors (see below), whose sum is σ = 132556872510531. Its totient is φ = 32634682982496.

The previous prime is 66824804526719. The next prime is 66824804526763. The reversal of 66824804526736 is 63762540842866.

The square root of 66824804526736 is 8174644.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1406015005 + ... + 1406062531.

Almost surely, 2^{66824804526736} is an apocalyptic number.

66824804526736 is the 8174644-th square number.

It is an amenable number.

66824804526736 is a deficient number, since it is larger than the sum of its proper divisors (65732067983795).

66824804526736 is an frugal number, since it uses more digits than its factorization.

66824804526736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95148 (or 47572 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 67.

The spelling of 66824804526736 in words is "sixty-six trillion, eight hundred twenty-four billion, eight hundred four million, five hundred twenty-six thousand, seven hundred thirty-six".