64401170695 has 4 divisors (see below), whose sum is σ = 77281404840. Its totient is φ = 51520936552.

The previous prime is 64401170693. The next prime is 64401170711. The reversal of 64401170695 is 59607110446.

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 64401170695 - 2¹ = 64401170693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64401170693) 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, 6440117065 + ... + 6440117074.

It is an arithmetic number, because the mean of its divisors is an integer number (19320351210).

Almost surely, 2^64401170695 is an apocalyptic number.

64401170695 is a deficient number, since it is larger than the sum of its proper divisors (12880234145).

64401170695 is a wasteful number, since it uses less digits than its factorization.

64401170695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880234144.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 64401170695 in words is "sixty-four billion, four hundred one million, one hundred seventy thousand, six hundred ninety-five".