400855088651 has 4 divisors (see below), whose sum is σ = 400878086952. Its totient is φ = 400832090352.

The previous prime is 400855088633. The next prime is 400855088659. The reversal of 400855088651 is 156880558004.

It is a happy number.

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 400855088651 - 2³⁰ = 399781346827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400855088651.

It is not an unprimeable number, because it can be changed into a prime (400855088659) 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, 11472986 + ... + 11507871.

It is an arithmetic number, because the mean of its divisors is an integer number (100219521738).

Almost surely, 2^400855088651 is an apocalyptic number.

400855088651 is a deficient number, since it is larger than the sum of its proper divisors (22998301).

400855088651 is a wasteful number, since it uses less digits than its factorization.

400855088651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22998300.

The product of its (nonzero) digits is 1536000, while the sum is 50.

The spelling of 400855088651 in words is "four hundred billion, eight hundred fifty-five million, eighty-eight thousand, six hundred fifty-one".