400011510155 has 16 divisors (see below), whose sum is σ = 486204919200. Its totient is φ = 315888277248.

The previous prime is 400011510133. The next prime is 400011510167. The reversal of 400011510155 is 551015110004.

It is a cyclic number.

It is not a de Polignac number, because 400011510155 - 2¹⁶ = 400011444619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400011510155.

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 in 15 ways as a sum of consecutive naturals, for example, 91121 + ... + 899069.

It is an arithmetic number, because the mean of its divisors is an integer number (30387807450).

Almost surely, 2^400011510155 is an apocalyptic number.

400011510155 is a deficient number, since it is larger than the sum of its proper divisors (86193409045).

400011510155 is a wasteful number, since it uses less digits than its factorization.

400011510155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809230.

The product of its (nonzero) digits is 500, while the sum is 23.

Adding to 400011510155 its reverse (551015110004), we get a palindrome (951026620159).

The spelling of 400011510155 in words is "four hundred billion, eleven million, five hundred ten thousand, one hundred fifty-five".