401172007727 has 4 divisors (see below), whose sum is σ = 403250619360. Its totient is φ = 399093396096.

The previous prime is 401172007723. The next prime is 401172007729. The reversal of 401172007727 is 727700271104.

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

It is a cyclic number.

It is not a de Polignac number, because 401172007727 - 2² = 401172007723 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 (401172007721) 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, 1039305527 + ... + 1039305912.

It is an arithmetic number, because the mean of its divisors is an integer number (100812654840).

Almost surely, 2^401172007727 is an apocalyptic number.

401172007727 is a deficient number, since it is larger than the sum of its proper divisors (2078611633).

401172007727 is a wasteful number, since it uses less digits than its factorization.

401172007727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078611632.

The product of its (nonzero) digits is 38416, while the sum is 38.

The spelling of 401172007727 in words is "four hundred one billion, one hundred seventy-two million, seven thousand, seven hundred twenty-seven".