787880554771 has 4 divisors (see below), whose sum is σ = 787889860912. Its totient is φ = 787871248632.

The previous prime is 787880554759. The next prime is 787880554781. The reversal of 787880554771 is 177455088787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177455088787 = 18397 ⋅9645871.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-787880554771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 787880554697 and 787880554706.

It is not an unprimeable number, because it can be changed into a prime (787880554751) 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, 4524900 + ... + 4695793.

It is an arithmetic number, because the mean of its divisors is an integer number (196972465228).

Almost surely, 2^787880554771 is an apocalyptic number.

787880554771 is a deficient number, since it is larger than the sum of its proper divisors (9306141).

787880554771 is an equidigital number, since it uses as much as digits as its factorization.

787880554771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9306140.

The product of its (nonzero) digits is 122931200, while the sum is 67.

The spelling of 787880554771 in words is "seven hundred eighty-seven billion, eight hundred eighty million, five hundred fifty-four thousand, seven hundred seventy-one".