65723436371 has 4 divisors (see below), whose sum is σ = 66240943872. Its totient is φ = 65205928872.

The previous prime is 65723436349. The next prime is 65723436409. The reversal of 65723436371 is 17363432756.

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 65723436371 - 2¹⁰ = 65723435347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65723433371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258753560 + ... + 258753813.

It is an arithmetic number, because the mean of its divisors is an integer number (16560235968).

Almost surely, 2^65723436371 is an apocalyptic number.

65723436371 is a deficient number, since it is larger than the sum of its proper divisors (517507501).

65723436371 is a wasteful number, since it uses less digits than its factorization.

65723436371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517507500.

The product of its digits is 1905120, while the sum is 47.

The spelling of 65723436371 in words is "sixty-five billion, seven hundred twenty-three million, four hundred thirty-six thousand, three hundred seventy-one".