400861621014 has 32 divisors (see below), whose sum is σ = 802513008000. Its totient is φ = 133488985344.

The previous prime is 400861621003. The next prime is 400861621019. The reversal of 400861621014 is 410126168004.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400861621019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29191302 + ... + 29205030.

It is an arithmetic number, because the mean of its divisors is an integer number (25078531500).

Almost surely, 2^400861621014 is an apocalyptic number.

400861621014 is an abundant number, since it is smaller than the sum of its proper divisors (401651386986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400861621014 is a wasteful number, since it uses less digits than its factorization.

400861621014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18172.

The product of its (nonzero) digits is 9216, while the sum is 33.

Adding to 400861621014 its reverse (410126168004), we get a palindrome (810987789018).

The spelling of 400861621014 in words is "four hundred billion, eight hundred sixty-one million, six hundred twenty-one thousand, fourteen".