401155320234157 has 2 divisors, whose sum is σ = 401155320234158. Its totient is φ = 401155320234156.

The previous prime is 401155320234017. The next prime is 401155320234173. The reversal of 401155320234157 is 751432023551104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291730874977161 + 109424445256996 = 17080131^2 + 10460614^2 .

It is a cyclic number.

It is not a de Polignac number, because 401155320234157 - 2⁴³ = 392359227211949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401155320234187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200577660117078 + 200577660117079.

It is an arithmetic number, because the mean of its divisors is an integer number (200577660117079).

Almost surely, 2^{401155320234157} is an apocalyptic number.

It is an amenable number.

401155320234157 is a deficient number, since it is larger than the sum of its proper divisors (1).

401155320234157 is an equidigital number, since it uses as much as digits as its factorization.

401155320234157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 401155320234157 in words is "four hundred one trillion, one hundred fifty-five billion, three hundred twenty million, two hundred thirty-four thousand, one hundred fifty-seven".