780780261552 has 40 divisors (see below), whose sum is σ = 2020451891136. Its totient is φ = 259816704576.

The previous prime is 780780261529. The next prime is 780780261553. The reversal of 780780261552 is 255162087087.

It is a junction number, because it is equal to n+sod(n) for n = 780780261495 and 780780261504.

It is not an unprimeable number, because it can be changed into a prime (780780261553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13827238 + ... + 13883589.

Almost surely, 2^780780261552 is an apocalyptic number.

It is an amenable number.

780780261552 is an abundant number, since it is smaller than the sum of its proper divisors (1239671629584).

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

780780261552 is a wasteful number, since it uses less digits than its factorization.

780780261552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27711425 (or 27711419 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 780780261552 in words is "seven hundred eighty billion, seven hundred eighty million, two hundred sixty-one thousand, five hundred fifty-two".