65940601471 has 4 divisors (see below), whose sum is σ = 65977711072. Its totient is φ = 65903491872.

The previous prime is 65940601457. The next prime is 65940601481. The reversal of 65940601471 is 17410604956.

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 65940601471 - 2⁹ = 65940600959 is a prime.

It is a super-3 number, since 3×65940601471³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65940601481) 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, 18552135 + ... + 18555688.

It is an arithmetic number, because the mean of its divisors is an integer number (16494427768).

Almost surely, 2^65940601471 is an apocalyptic number.

65940601471 is a deficient number, since it is larger than the sum of its proper divisors (37109601).

65940601471 is a wasteful number, since it uses less digits than its factorization.

65940601471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37109600.

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

The spelling of 65940601471 in words is "sixty-five billion, nine hundred forty million, six hundred one thousand, four hundred seventy-one".