57780513663 has 16 divisors (see below), whose sum is σ = 78746743296. Its totient is φ = 37671988640.

The previous prime is 57780513649. The next prime is 57780513779. The reversal of 57780513663 is 36631508775.

It is a cyclic number.

It is not a de Polignac number, because 57780513663 - 2¹⁰ = 57780512639 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57780513643) 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, 534795 + ... + 633692.

It is an arithmetic number, because the mean of its divisors is an integer number (4921671456).

Almost surely, 2^57780513663 is an apocalyptic number.

57780513663 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

57780513663 is a deficient number, since it is larger than the sum of its proper divisors (20966229633).

57780513663 is a wasteful number, since it uses less digits than its factorization.

57780513663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168854.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 57780513663 in words is "fifty-seven billion, seven hundred eighty million, five hundred thirteen thousand, six hundred sixty-three".