66620415303151 has 4 divisors (see below), whose sum is σ = 66627017276904. Its totient is φ = 66613813329400.

The previous prime is 66620415303023. The next prime is 66620415303191. The reversal of 66620415303151 is 15130351402666.

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 66620415303151 - 2⁷ = 66620415303023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66620415303098 and 66620415303107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66620415303191) 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, 3300971740 + ... + 3300991921.

It is an arithmetic number, because the mean of its divisors is an integer number (16656754319226).

Almost surely, 2^{66620415303151} is an apocalyptic number.

66620415303151 is a deficient number, since it is larger than the sum of its proper divisors (6601973753).

66620415303151 is a wasteful number, since it uses less digits than its factorization.

66620415303151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601973752.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 66620415303151 in words is "sixty-six trillion, six hundred twenty billion, four hundred fifteen million, three hundred three thousand, one hundred fifty-one".