400445002105445 has 8 divisors (see below), whose sum is σ = 524218911847200. Its totient is φ = 291232728803920.

The previous prime is 400445002105441. The next prime is 400445002105451. The reversal of 400445002105445 is 544501200544004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400445002105445 - 2² = 400445002105441 is a prime.

It is a super-2 number, since 2×400445002105445² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400445002105399 and 400445002105408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400445002105441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3640409109995 + ... + 3640409110104.

It is an arithmetic number, because the mean of its divisors is an integer number (65527363980900).

Almost surely, 2^{400445002105445} is an apocalyptic number.

It is an amenable number.

400445002105445 is a deficient number, since it is larger than the sum of its proper divisors (123773909741755).

400445002105445 is a wasteful number, since it uses less digits than its factorization.

400445002105445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280818220115.

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 400445002105445 its reverse (544501200544004), we get a palindrome (944946202649449).

The spelling of 400445002105445 in words is "four hundred trillion, four hundred forty-five billion, two million, one hundred five thousand, four hundred forty-five".