400111910193 has 4 divisors (see below), whose sum is σ = 533482546928. Its totient is φ = 266741273460.

The previous prime is 400111910131. The next prime is 400111910213. The reversal of 400111910193 is 391019111004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400111910193 - 2²⁴ = 400095132977 is a prime.

It is a super-3 number, since 3×400111910193³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400111910193.

It is not an unprimeable number, because it can be changed into a prime (400111910123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66685318363 + ... + 66685318368.

It is an arithmetic number, because the mean of its divisors is an integer number (133370636732).

Almost surely, 2^400111910193 is an apocalyptic number.

It is an amenable number.

400111910193 is a deficient number, since it is larger than the sum of its proper divisors (133370636735).

400111910193 is a wasteful number, since it uses less digits than its factorization.

400111910193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133370636734.

The product of its (nonzero) digits is 972, while the sum is 30.

The spelling of 400111910193 in words is "four hundred billion, one hundred eleven million, nine hundred ten thousand, one hundred ninety-three".