401978188110151 has 2 divisors, whose sum is σ = 401978188110152. Its totient is φ = 401978188110150.

The previous prime is 401978188110137. The next prime is 401978188110271. The reversal of 401978188110151 is 151011881879104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401978188110151 - 2¹¹ = 401978188108103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401978188110092 and 401978188110101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401978189110151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200989094055075 + 200989094055076.

It is an arithmetic number, because the mean of its divisors is an integer number (200989094055076).

Almost surely, 2^{401978188110151} is an apocalyptic number.

401978188110151 is a deficient number, since it is larger than the sum of its proper divisors (1).

401978188110151 is an equidigital number, since it uses as much as digits as its factorization.

401978188110151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 55.

The spelling of 401978188110151 in words is "four hundred one trillion, nine hundred seventy-eight billion, one hundred eighty-eight million, one hundred ten thousand, one hundred fifty-one".