65181381351562 has 8 divisors (see below), whose sum is σ = 111739510888416. Its totient is φ = 27934877722092.

The previous prime is 65181381351551. The next prime is 65181381351563. The reversal of 65181381351562 is 26515318318156.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×65181381351562² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65181381351563) 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, 2327906476828 + ... + 2327906476855.

It is an arithmetic number, because the mean of its divisors is an integer number (13967438861052).

Almost surely, 2^{65181381351562} is an apocalyptic number.

65181381351562 is a deficient number, since it is larger than the sum of its proper divisors (46558129536854).

65181381351562 is a wasteful number, since it uses less digits than its factorization.

65181381351562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655812953692.

The product of its digits is 5184000, while the sum is 55.

The spelling of 65181381351562 in words is "sixty-five trillion, one hundred eighty-one billion, three hundred eighty-one million, three hundred fifty-one thousand, five hundred sixty-two".