1238178698401 has 16 divisors (see below), whose sum is σ = 1251255979008. Its totient is φ = 1225177707600.

The previous prime is 1238178698381. The next prime is 1238178698441. The reversal of 1238178698401 is 1048968718321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1238178698401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238178698441) 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, 48713386 + ... + 48738796.

It is an arithmetic number, because the mean of its divisors is an integer number (78203498688).

Almost surely, 2^{1238178698401} is an apocalyptic number.

It is an amenable number.

1238178698401 is a deficient number, since it is larger than the sum of its proper divisors (13077280607).

1238178698401 is a wasteful number, since it uses less digits than its factorization.

1238178698401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26892.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 1238178698401 in words is "one trillion, two hundred thirty-eight billion, one hundred seventy-eight million, six hundred ninety-eight thousand, four hundred one".