1663802630125 has 16 divisors (see below), whose sum is σ = 2076488294400. Its totient is φ = 1331001968400.

The previous prime is 1663802630111. The next prime is 1663802630257. The reversal of 1663802630125 is 5210362083661.

It is not a de Polignac number, because 1663802630125 - 2⁵ = 1663802630093 is a prime.

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, 4377436 + ... + 4742314.

It is an arithmetic number, because the mean of its divisors is an integer number (129780518400).

Almost surely, 2^{1663802630125} is an apocalyptic number.

It is an amenable number.

1663802630125 is a deficient number, since it is larger than the sum of its proper divisors (412685664275).

1663802630125 is an equidigital number, since it uses as much as digits as its factorization.

1663802630125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401373 (or 401363 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 1663802630125 in words is "one trillion, six hundred sixty-three billion, eight hundred two million, six hundred thirty thousand, one hundred twenty-five".