66999120301 has 4 divisors (see below), whose sum is σ = 67008813372. Its totient is φ = 66989427232.

The previous prime is 66999120299. The next prime is 66999120347. The reversal of 66999120301 is 10302199966.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52337543076 + 14661577225 = 228774^2 + 121085^2 .

It is a cyclic number.

It is not a de Polignac number, because 66999120301 - 2¹ = 66999120299 is a prime.

It is a super-2 number, since 2×66999120301² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66999120401) 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, 4836160 + ... + 4849993.

It is an arithmetic number, because the mean of its divisors is an integer number (16752203343).

Almost surely, 2^66999120301 is an apocalyptic number.

It is an amenable number.

66999120301 is a deficient number, since it is larger than the sum of its proper divisors (9693071).

66999120301 is an equidigital number, since it uses as much as digits as its factorization.

66999120301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9693070.

The product of its (nonzero) digits is 157464, while the sum is 46.

The spelling of 66999120301 in words is "sixty-six billion, nine hundred ninety-nine million, one hundred twenty thousand, three hundred one".