401877486511 has 4 divisors (see below), whose sum is σ = 404574651000. Its totient is φ = 399180322024.

The previous prime is 401877486509. The next prime is 401877486539. The reversal of 401877486511 is 115684778104.

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 401877486511 - 2¹ = 401877486509 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 (401877486581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348582021 + ... + 1348582318.

It is an arithmetic number, because the mean of its divisors is an integer number (101143662750).

Almost surely, 2^401877486511 is an apocalyptic number.

401877486511 is a deficient number, since it is larger than the sum of its proper divisors (2697164489).

401877486511 is a wasteful number, since it uses less digits than its factorization.

401877486511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697164488.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 401877486511 in words is "four hundred one billion, eight hundred seventy-seven million, four hundred eighty-six thousand, five hundred eleven".