66633065515061 has 4 divisors (see below), whose sum is σ = 66749760901824. Its totient is φ = 66516370128300.

The previous prime is 66633065515043. The next prime is 66633065515073. The reversal of 66633065515061 is 16051556033666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66633065515061 - 2⁶ = 66633065514997 is a prime.

It is a super-2 number, since 2×66633065515061² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66633065514994 and 66633065515012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66633065515661) 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, 58347692525 + ... + 58347693666.

It is an arithmetic number, because the mean of its divisors is an integer number (16687440225456).

Almost surely, 2^{66633065515061} is an apocalyptic number.

It is an amenable number.

66633065515061 is a deficient number, since it is larger than the sum of its proper divisors (116695386763).

66633065515061 is a wasteful number, since it uses less digits than its factorization.

66633065515061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116695386762.

The product of its (nonzero) digits is 8748000, while the sum is 53.

The spelling of 66633065515061 in words is "sixty-six trillion, six hundred thirty-three billion, sixty-five million, five hundred fifteen thousand, sixty-one".