65407681088 has 14 divisors (see below), whose sum is σ = 129793367286. Its totient is φ = 32703840512.

The previous prime is 65407681081. The next prime is 65407681093. The reversal of 65407681088 is 88018670456.

It can be written as a sum of positive squares in only one way, i.e., 40243569664 + 25164111424 = 200608^2 + 158632^2 .

It is not an unprimeable number, because it can be changed into a prime (65407681081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510997445 + ... + 510997572.

Almost surely, 2^65407681088 is an apocalyptic number.

It is an amenable number.

65407681088 is a deficient number, since it is larger than the sum of its proper divisors (64385686198).

65407681088 is a wasteful number, since it uses less digits than its factorization.

65407681088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021995029 (or 1021995019 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 65407681088 in words is "sixty-five billion, four hundred seven million, six hundred eighty-one thousand, eighty-eight".