401655301677 has 18 divisors (see below), whose sum is σ = 674890201518. Its totient is φ = 229517314992.

The previous prime is 401655301657. The next prime is 401655301709. The reversal of 401655301677 is 776103556104.

401655301677 is a `hidden beast` number, since 4 + 0 + 16 + 553 + 0 + 16 + 77 = 666.

It can be written as a sum of positive squares in only one way, i.e., 372571068996 + 29084232681 = 610386^2 + 170541^2 .

It is not a de Polignac number, because 401655301677 - 2¹² = 401655297581 is a prime.

It is a super-2 number, since 2×401655301677² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401655301657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 455391058 + ... + 455391939.

Almost surely, 2^401655301677 is an apocalyptic number.

It is an amenable number.

401655301677 is a deficient number, since it is larger than the sum of its proper divisors (273234899841).

401655301677 is a wasteful number, since it uses less digits than its factorization.

401655301677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910783017 (or 910783007 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 401655301677 in words is "four hundred one billion, six hundred fifty-five million, three hundred one thousand, six hundred seventy-seven".