65374780770 has 96 divisors (see below), whose sum is σ = 183149694000. Its totient is φ = 16083436032.

The previous prime is 65374780759. The next prime is 65374780787. The reversal of 65374780770 is 7708747356.

It can be written as a sum of positive squares in 8 ways, for example, as 36878977521 + 28495803249 = 192039^2 + 168807^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2265996 + ... + 2294664.

Almost surely, 2^65374780770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65374780770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91574847000).

65374780770 is an abundant number, since it is smaller than the sum of its proper divisors (117774913230).

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

65374780770 is a wasteful number, since it uses less digits than its factorization.

65374780770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30644 (or 30641 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 54.

The spelling of 65374780770 in words is "sixty-five billion, three hundred seventy-four million, seven hundred eighty thousand, seven hundred seventy".