401683437678 has 32 divisors (see below), whose sum is σ = 852308029440. Its totient is φ = 125848598400.

The previous prime is 401683437643. The next prime is 401683437679. The reversal of 401683437678 is 876734386104.

It is a super-2 number, since 2×401683437678² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 15 ways as a sum of consecutive naturals, for example, 13857723 + ... + 13886678.

It is an arithmetic number, because the mean of its divisors is an integer number (26634625920).

Almost surely, 2^401683437678 is an apocalyptic number.

401683437678 is an abundant number, since it is smaller than the sum of its proper divisors (450624591762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401683437678 is a wasteful number, since it uses less digits than its factorization.

401683437678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27744552.

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 401683437678 in words is "four hundred one billion, six hundred eighty-three million, four hundred thirty-seven thousand, six hundred seventy-eight".