400444232400351 has 6 divisors (see below), whose sum is σ = 578419446800520. Its totient is φ = 266962821600228.

The previous prime is 400444232400283. The next prime is 400444232400389. The reversal of 400444232400351 is 153004232444004.

400444232400351 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 44 + 23 + 240 + 0 + 351 = 666.

It is not a de Polignac number, because 400444232400351 - 2²³ = 400444224011743 is a prime.

It is a super-2 number, since 2×400444232400351² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444232401351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22246901800011 + ... + 22246901800028.

It is an arithmetic number, because the mean of its divisors is an integer number (96403241133420).

Almost surely, 2^{400444232400351} is an apocalyptic number.

400444232400351 is a deficient number, since it is larger than the sum of its proper divisors (177975214400169).

400444232400351 is a wasteful number, since it uses less digits than its factorization.

400444232400351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44493803600045 (or 44493803600042 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 400444232400351 its reverse (153004232444004), we get a palindrome (553448464844355).

The spelling of 400444232400351 in words is "four hundred trillion, four hundred forty-four billion, two hundred thirty-two million, four hundred thousand, three hundred fifty-one".