66370155001 has 4 divisors (see below), whose sum is σ = 68163943012. Its totient is φ = 64576366992.

The previous prime is 66370154911. The next prime is 66370155041. The reversal of 66370155001 is 10055107366.

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 52663365225 + 13706789776 = 229485^2 + 117076^2 .

It is not a de Polignac number, because 66370155001 - 2⁹ = 66370154489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66370155041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896893950 + ... + 896894023.

It is an arithmetic number, because the mean of its divisors is an integer number (17040985753).

Almost surely, 2^66370155001 is an apocalyptic number.

It is an amenable number.

66370155001 is a deficient number, since it is larger than the sum of its proper divisors (1793788011).

66370155001 is a wasteful number, since it uses less digits than its factorization.

66370155001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793788010.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 66370155001 in words is "sixty-six billion, three hundred seventy million, one hundred fifty-five thousand, one".