401663791514 has 4 divisors (see below), whose sum is σ = 602495687274. Its totient is φ = 200831895756.

The previous prime is 401663791493. The next prime is 401663791537. The reversal of 401663791514 is 415197366104.

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

It can be written as a sum of positive squares in only one way, i.e., 308599137289 + 93064654225 = 555517^2 + 305065^2 .

It is a super-2 number, since 2×401663791514² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 100415947877 + ... + 100415947880.

Almost surely, 2^401663791514 is an apocalyptic number.

401663791514 is a deficient number, since it is larger than the sum of its proper divisors (200831895760).

401663791514 is a wasteful number, since it uses less digits than its factorization.

401663791514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200831895759.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 401663791514 in words is "four hundred one billion, six hundred sixty-three million, seven hundred ninety-one thousand, five hundred fourteen".