1398053944656 has 80 divisors (see below), whose sum is σ = 4016199345600. Its totient is φ = 465638620032.

The previous prime is 1398053944649. The next prime is 1398053944663. The reversal of 1398053944656 is 6564493508931.

1398053944656 is a `hidden beast` number, since 1 + 3 + 9 + 8 + 0 + 539 + 4 + 46 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (1398053944649) and next prime (1398053944663).

It is a junction number, because it is equal to n+sod(n) for n = 1398053944593 and 1398053944602.

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, 785686 + ... + 1847541.

It is an arithmetic number, because the mean of its divisors is an integer number (50202491820).

Almost surely, 2^{1398053944656} is an apocalyptic number.

1398053944656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1398053944656 is an abundant number, since it is smaller than the sum of its proper divisors (2618145400944).

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

1398053944656 is a wasteful number, since it uses less digits than its factorization.

1398053944656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634473 (or 2634461 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 63.

The spelling of 1398053944656 in words is "one trillion, three hundred ninety-eight billion, fifty-three million, nine hundred forty-four thousand, six hundred fifty-six".