401777013496277 has 2 divisors, whose sum is σ = 401777013496278. Its totient is φ = 401777013496276.

The previous prime is 401777013496249. The next prime is 401777013496357. The reversal of 401777013496277 is 772694310777104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379877290374481 + 21899723121796 = 19490441^2 + 4679714^2 .

It is a cyclic number.

It is not a de Polignac number, because 401777013496277 - 2⁸ = 401777013496021 is a prime.

It is a super-2 number, since 2×401777013496277² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401777013496217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200888506748138 + 200888506748139.

It is an arithmetic number, because the mean of its divisors is an integer number (200888506748139).

Almost surely, 2^{401777013496277} is an apocalyptic number.

It is an amenable number.

401777013496277 is a deficient number, since it is larger than the sum of its proper divisors (1).

401777013496277 is an equidigital number, since it uses as much as digits as its factorization.

401777013496277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87127488, while the sum is 65.

The spelling of 401777013496277 in words is "four hundred one trillion, seven hundred seventy-seven billion, thirteen million, four hundred ninety-six thousand, two hundred seventy-seven".