64151660071 has 4 divisors (see below), whose sum is σ = 67925287152. Its totient is φ = 60378032992.

The previous prime is 64151660057. The next prime is 64151660077. The reversal of 64151660071 is 17006615146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17006615146 = 2 ⋅8503307573.

It is a cyclic number.

It is not a de Polignac number, because 64151660071 - 2¹¹ = 64151658023 is a prime.

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 64151660071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64151660077) 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, 1886813515 + ... + 1886813548.

It is an arithmetic number, because the mean of its divisors is an integer number (16981321788).

Almost surely, 2^64151660071 is an apocalyptic number.

64151660071 is a deficient number, since it is larger than the sum of its proper divisors (3773627081).

64151660071 is a wasteful number, since it uses less digits than its factorization.

64151660071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773627080.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 64151660071 in words is "sixty-four billion, one hundred fifty-one million, six hundred sixty thousand, seventy-one".