1663530604860 has 48 divisors (see below), whose sum is σ = 4694561980416. Its totient is φ = 440115181632.

The previous prime is 1663530604843. The next prime is 1663530604873. The reversal of 1663530604860 is 684060353661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109147932 + ... + 109163171.

It is an arithmetic number, because the mean of its divisors is an integer number (97803374592).

Almost surely, 2^{1663530604860} is an apocalyptic number.

1663530604860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663530604860 is an abundant number, since it is smaller than the sum of its proper divisors (3031031375556).

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

1663530604860 is a wasteful number, since it uses less digits than its factorization.

1663530604860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218311242 (or 218311240 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

It can be divided in two parts, 166353060 and 4860, that added together give a triangular number (166357920 = T₁₈₂₄₀).

The spelling of 1663530604860 in words is "one trillion, six hundred sixty-three billion, five hundred thirty million, six hundred four thousand, eight hundred sixty".