1663541635106 has 64 divisors (see below), whose sum is σ = 2779907074560. Its totient is φ = 741786888960.

The previous prime is 1663541635099. The next prime is 1663541635139. The reversal of 1663541635106 is 6015361453661.

It is a super-2 number, since 2×1663541635106² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124166000 + ... + 124179396.

It is an arithmetic number, because the mean of its divisors is an integer number (43436048040).

Almost surely, 2^{1663541635106} is an apocalyptic number.

1663541635106 is a deficient number, since it is larger than the sum of its proper divisors (1116365439454).

1663541635106 is a wasteful number, since it uses less digits than its factorization.

1663541635106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14859.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 1663541635106 in words is "one trillion, six hundred sixty-three billion, five hundred forty-one million, six hundred thirty-five thousand, one hundred six".