1398805864125 has 16 divisors (see below), whose sum is σ = 2327612958528. Its totient is φ = 746029794000.

The previous prime is 1398805864123. The next prime is 1398805864153. The reversal of 1398805864125 is 5214685088931.

It is not a de Polignac number, because 1398805864125 - 2¹ = 1398805864123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398805864123) 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, 1865074111 + ... + 1865074860.

It is an arithmetic number, because the mean of its divisors is an integer number (145475809908).

Almost surely, 2^{1398805864125} is an apocalyptic number.

1398805864125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1398805864125 is a deficient number, since it is larger than the sum of its proper divisors (928807094403).

1398805864125 is an equidigital number, since it uses as much as digits as its factorization.

1398805864125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730148989 (or 3730148979 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 60.

The spelling of 1398805864125 in words is "one trillion, three hundred ninety-eight billion, eight hundred five million, eight hundred sixty-four thousand, one hundred twenty-five".