663520074771 has 16 divisors (see below), whose sum is σ = 898346069280. Its totient is φ = 435561646080.

The previous prime is 663520074713. The next prime is 663520074773. The reversal of 663520074771 is 177470025366.

663520074771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663520074771 - 2¹³ = 663520066579 is a prime.

It is a super-2 number, since 2×663520074771² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 663520074771.

It is not an unprimeable number, because it can be changed into a prime (663520074773) 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, 5091450 + ... + 5220143.

It is an arithmetic number, because the mean of its divisors is an integer number (56146629330).

Almost surely, 2^663520074771 is an apocalyptic number.

663520074771 is a deficient number, since it is larger than the sum of its proper divisors (234825994509).

663520074771 is a wasteful number, since it uses less digits than its factorization.

663520074771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311926.

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 663520074771 in words is "six hundred sixty-three billion, five hundred twenty million, seventy-four thousand, seven hundred seventy-one".