401683437677 has 4 divisors (see below), whose sum is σ = 405368606940. Its totient is φ = 397998268416.

The previous prime is 401683437643. The next prime is 401683437679. The reversal of 401683437677 is 776734386104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 345615827881 + 56067609796 = 587891^2 + 236786^2 .

It is a cyclic number.

It is not a de Polignac number, because 401683437677 - 2³⁰ = 400609695853 is a prime.

It is a super-2 number, since 2×401683437677² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401683437679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1842584468 + ... + 1842584685.

It is an arithmetic number, because the mean of its divisors is an integer number (101342151735).

Almost surely, 2^401683437677 is an apocalyptic number.

It is an amenable number.

401683437677 is a deficient number, since it is larger than the sum of its proper divisors (3685169263).

401683437677 is a wasteful number, since it uses less digits than its factorization.

401683437677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685169262.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 401683437677 in words is "four hundred one billion, six hundred eighty-three million, four hundred thirty-seven thousand, six hundred seventy-seven".