780556655087 has 24 divisors (see below), whose sum is σ = 870078309408. Its totient is φ = 699588299520.

The previous prime is 780556655063. The next prime is 780556655107.

780556655087 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 780556655087 - 2²⁰ = 780555606511 is a prime.

It is a super-3 number, since 3×780556655087³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780556655017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23099078 + ... + 23132844.

It is an arithmetic number, because the mean of its divisors is an integer number (36253262892).

Almost surely, 2^780556655087 is an apocalyptic number.

780556655087 is a deficient number, since it is larger than the sum of its proper divisors (89521654321).

780556655087 is a wasteful number, since it uses less digits than its factorization.

780556655087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36479 (or 36468 counting only the distinct ones).

The product of its (nonzero) digits is 70560000, while the sum is 62.

The spelling of 780556655087 in words is "seven hundred eighty billion, five hundred fifty-six million, six hundred fifty-five thousand, eighty-seven".