66523045837151 has 4 divisors (see below), whose sum is σ = 66655298413872. Its totient is φ = 66390793260432.

The previous prime is 66523045837139. The next prime is 66523045837153. The reversal of 66523045837151 is 15173854032566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66523045837151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66523045837153) 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, 66126287606 + ... + 66126288611.

It is an arithmetic number, because the mean of its divisors is an integer number (16663824603468).

Almost surely, 2^{66523045837151} is an apocalyptic number.

66523045837151 is a deficient number, since it is larger than the sum of its proper divisors (132252576721).

66523045837151 is a wasteful number, since it uses less digits than its factorization.

66523045837151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132252576720.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 66523045837151 in words is "sixty-six trillion, five hundred twenty-three billion, forty-five million, eight hundred thirty-seven thousand, one hundred fifty-one".