66470648151 has 4 divisors (see below), whose sum is σ = 88627530872. Its totient is φ = 44313765432.

The previous prime is 66470648149. The next prime is 66470648207. The reversal of 66470648151 is 15184607466.

It is a happy number.

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

It is not a de Polignac number, because 66470648151 - 2¹ = 66470648149 is a prime.

It is a super-2 number, since 2×66470648151² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66470648151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66470628151) 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, 11078441356 + ... + 11078441361.

It is an arithmetic number, because the mean of its divisors is an integer number (22156882718).

Almost surely, 2^66470648151 is an apocalyptic number.

66470648151 is a deficient number, since it is larger than the sum of its proper divisors (22156882721).

66470648151 is a wasteful number, since it uses less digits than its factorization.

66470648151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22156882720.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 66470648151 in words is "sixty-six billion, four hundred seventy million, six hundred forty-eight thousand, one hundred fifty-one".