65140961280 has 104 divisors (see below), whose sum is σ = 208425826992. Its totient is φ = 17370906624.

The previous prime is 65140961269. The next prime is 65140961287. The reversal of 65140961280 is 8216904156.

It is not an unprimeable number, because it can be changed into a prime (65140961287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468679 + ... + 591558.

Almost surely, 2^65140961280 is an apocalyptic number.

65140961280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65140961280 is an abundant number, since it is smaller than the sum of its proper divisors (143284865712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65140961280 is a wasteful number, since it uses less digits than its factorization.

65140961280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060269 (or 1060247 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 65140961280 in words is "sixty-five billion, one hundred forty million, nine hundred sixty-one thousand, two hundred eighty".