66532013351 has 4 divisors (see below), whose sum is σ = 68330175912. Its totient is φ = 64733850792.

The previous prime is 66532013341. The next prime is 66532013377. The reversal of 66532013351 is 15331023566.

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

It is a cyclic number.

It is not a de Polignac number, because 66532013351 - 2²² = 66527819047 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 (66532013341) 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, 899081225 + ... + 899081298.

It is an arithmetic number, because the mean of its divisors is an integer number (17082543978).

Almost surely, 2^66532013351 is an apocalyptic number.

66532013351 is a deficient number, since it is larger than the sum of its proper divisors (1798162561).

66532013351 is a wasteful number, since it uses less digits than its factorization.

66532013351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798162560.

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 66532013351 in words is "sixty-six billion, five hundred thirty-two million, thirteen thousand, three hundred fifty-one".