66707337511936 has 99 divisors (see below), whose sum is σ = 146580595341663. Its totient is φ = 30320210257920.

The previous prime is 66707337511933. The next prime is 66707337511939. The reversal of 66707337511936 is 63911573370766.

The square root of 66707337511936 is 8167456.

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

It is an interprime number because it is at equal distance from previous prime (66707337511933) and next prime (66707337511939).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66707337511933) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2874932911 + ... + 2874956113.

Almost surely, 2^{66707337511936} is an apocalyptic number.

66707337511936 is the 8167456-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66707337511936

66707337511936 is an abundant number, since it is smaller than the sum of its proper divisors (79873257829727).

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

66707337511936 is an frugal number, since it uses more digits than its factorization.

66707337511936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46448 (or 23216 counting only the distinct ones).

The product of its (nonzero) digits is 90016920, while the sum is 64.

66707337511936 divided by its sum of digits (64) gives a square (1042302148624 = 1020932²).

The spelling of 66707337511936 in words is "sixty-six trillion, seven hundred seven billion, three hundred thirty-seven million, five hundred eleven thousand, nine hundred thirty-six".