1397998551793 has 8 divisors (see below), whose sum is σ = 1558140801120. Its totient is φ = 1246512640320.

The previous prime is 1397998551731. The next prime is 1397998551839. The reversal of 1397998551793 is 3971558997931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1397998551793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397998851793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2164084123 + ... + 2164084768.

It is an arithmetic number, because the mean of its divisors is an integer number (194767600140).

Almost surely, 2^{1397998551793} is an apocalyptic number.

It is an amenable number.

1397998551793 is a deficient number, since it is larger than the sum of its proper divisors (160142249327).

1397998551793 is a wasteful number, since it uses less digits than its factorization.

1397998551793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328168927.

The product of its digits is 578680200, while the sum is 76.

The spelling of 1397998551793 in words is "one trillion, three hundred ninety-seven billion, nine hundred ninety-eight million, five hundred fifty-one thousand, seven hundred ninety-three".