663671594355 has 64 divisors (see below), whose sum is σ = 1336268648448. Its totient is φ = 273233842560.

The previous prime is 663671594351. The next prime is 663671594371. The reversal of 663671594355 is 553495176366.

It is not a de Polignac number, because 663671594355 - 2² = 663671594351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663671594351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2561497 + ... + 2808666.

It is an arithmetic number, because the mean of its divisors is an integer number (20879197632).

Almost surely, 2^663671594355 is an apocalyptic number.

663671594355 is an abundant number, since it is smaller than the sum of its proper divisors (672597054093).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663671594355 is a wasteful number, since it uses less digits than its factorization.

663671594355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5370296.

The product of its digits is 61236000, while the sum is 60.

The spelling of 663671594355 in words is "six hundred sixty-three billion, six hundred seventy-one million, five hundred ninety-four thousand, three hundred fifty-five".