1398805864124 has 18 divisors (see below), whose sum is σ = 2482423243272. Its totient is φ = 689542361200.

The previous prime is 1398805864123. The next prime is 1398805864153. The reversal of 1398805864124 is 4214685088931.

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 5 ways as a sum of consecutive naturals, for example, 19896314 + ... + 19966494.

It is an arithmetic number, because the mean of its divisors is an integer number (137912402404).

Almost surely, 2^{1398805864124} is an apocalyptic number.

It is an amenable number.

1398805864124 is a deficient number, since it is larger than the sum of its proper divisors (1083617379148).

1398805864124 is an frugal number, since it uses more digits than its factorization.

1398805864124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140437 (or 70254 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 1398805864124 in words is "one trillion, three hundred ninety-eight billion, eight hundred five million, eight hundred sixty-four thousand, one hundred twenty-four".