401211577277 has 12 divisors (see below), whose sum is σ = 466729373340. Its totient is φ = 343885421376.

The previous prime is 401211577267. The next prime is 401211577303. The reversal of 401211577277 is 772775112104.

It can be written as a sum of positive squares in 2 ways, for example, as 3446746681 + 397764830596 = 58709^2 + 630686^2 .

It is not a de Polignac number, because 401211577277 - 2⁸ = 401211577021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401211577267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1876049 + ... + 2078937.

It is an arithmetic number, because the mean of its divisors is an integer number (38894114445).

Almost surely, 2^401211577277 is an apocalyptic number.

It is an amenable number.

401211577277 is a deficient number, since it is larger than the sum of its proper divisors (65517796063).

401211577277 is a wasteful number, since it uses less digits than its factorization.

401211577277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243260 (or 243253 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 44.

The spelling of 401211577277 in words is "four hundred one billion, two hundred eleven million, five hundred seventy-seven thousand, two hundred seventy-seven".