66715500500074 has 8 divisors (see below), whose sum is σ = 100392973596900. Its totient is φ = 33251175967776.

The previous prime is 66715500500071. The next prime is 66715500500081. The reversal of 66715500500074 is 47000500551766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36864848719449 + 29850651780625 = 6071643^2 + 5463575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 66715500499997 and 66715500500033.

It is not an unprimeable number, because it can be changed into a prime (66715500500071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53287140349 + ... + 53287141600.

Almost surely, 2^{66715500500074} is an apocalyptic number.

66715500500074 is a deficient number, since it is larger than the sum of its proper divisors (33677473096826).

66715500500074 is a wasteful number, since it uses less digits than its factorization.

66715500500074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106574282264.

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 66715500500074 in words is "sixty-six trillion, seven hundred fifteen billion, five hundred million, five hundred thousand, seventy-four".