1201331450406 has 64 divisors (see below), whose sum is σ = 2538024652800. Its totient is φ = 378032852736.

The previous prime is 1201331450381. The next prime is 1201331450411. The reversal of 1201331450406 is 6040541331021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150293946 + ... + 150301938.

It is an arithmetic number, because the mean of its divisors is an integer number (39656635200).

Almost surely, 2^{1201331450406} is an apocalyptic number.

1201331450406 is an abundant number, since it is smaller than the sum of its proper divisors (1336693202394).

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

1201331450406 is a wasteful number, since it uses less digits than its factorization.

1201331450406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12493.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1201331450406 its reverse (6040541331021), we get a palindrome (7241872781427).

The spelling of 1201331450406 in words is "one trillion, two hundred one billion, three hundred thirty-one million, four hundred fifty thousand, four hundred six".