27780377963 has 8 divisors (see below), whose sum is σ = 30115460256. Its totient is φ = 25473600000.

The previous prime is 27780377957. The next prime is 27780377971. The reversal of 27780377963 is 36977308772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27780377963 - 2⁶ = 27780377899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27780377923) 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, 7074038 + ... + 7077963.

It is an arithmetic number, because the mean of its divisors is an integer number (3764432532).

Almost surely, 2^27780377963 is an apocalyptic number.

27780377963 is a deficient number, since it is larger than the sum of its proper divisors (2335082293).

27780377963 is a wasteful number, since it uses less digits than its factorization.

27780377963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14152165.

The product of its (nonzero) digits is 18670176, while the sum is 59.

The spelling of 27780377963 in words is "twenty-seven billion, seven hundred eighty million, three hundred seventy-seven thousand, nine hundred sixty-three".