2077781855963 has 16 divisors (see below), whose sum is σ = 2327343363072. Its totient is φ = 1838546184000.

The previous prime is 2077781855959. The next prime is 2077781855969. The reversal of 2077781855963 is 3695581877702.

It is a cyclic number.

It is not a de Polignac number, because 2077781855963 - 2² = 2077781855959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2077781855893 and 2077781855902.

It is not an unprimeable number, because it can be changed into a prime (2077781855969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5150231 + ... + 5538992.

It is an arithmetic number, because the mean of its divisors is an integer number (145458960192).

Almost surely, 2^{2077781855963} is an apocalyptic number.

2077781855963 is a deficient number, since it is larger than the sum of its proper divisors (249561507109).

2077781855963 is a wasteful number, since it uses less digits than its factorization.

2077781855963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689706.

The product of its (nonzero) digits is 177811200, while the sum is 68.

The spelling of 2077781855963 in words is "two trillion, seventy-seven billion, seven hundred eighty-one million, eight hundred fifty-five thousand, nine hundred sixty-three".