65036344642 has 4 divisors (see below), whose sum is σ = 97554516966. Its totient is φ = 32518172320.

The previous prime is 65036344567. The next prime is 65036344643. The reversal of 65036344642 is 24644363056.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 59340472801 + 5695871841 = 243599^2 + 75471^2 .

It is a super-2 number, since 2×65036344642² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65036344643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16259086159 + ... + 16259086162.

Almost surely, 2^65036344642 is an apocalyptic number.

65036344642 is a deficient number, since it is larger than the sum of its proper divisors (32518172324).

65036344642 is a wasteful number, since it uses less digits than its factorization.

65036344642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32518172323.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 65036344642 in words is "sixty-five billion, thirty-six million, three hundred forty-four thousand, six hundred forty-two".