1288870779563 has 4 divisors (see below), whose sum is σ = 1344908639568. Its totient is φ = 1232832919560.

The previous prime is 1288870779557. The next prime is 1288870779583. The reversal of 1288870779563 is 3659770788821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1288870779563 - 2¹⁸ = 1288870517419 is a prime.

It is a super-2 number, since 2×1288870779563² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288870779503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28018929968 + ... + 28018930013.

It is an arithmetic number, because the mean of its divisors is an integer number (336227159892).

Almost surely, 2^{1288870779563} is an apocalyptic number.

1288870779563 is a deficient number, since it is larger than the sum of its proper divisors (56037860005).

1288870779563 is an equidigital number, since it uses as much as digits as its factorization.

1288870779563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56037860004.

The product of its (nonzero) digits is 284497920, while the sum is 71.

The spelling of 1288870779563 in words is "one trillion, two hundred eighty-eight billion, eight hundred seventy million, seven hundred seventy-nine thousand, five hundred sixty-three".