1215040433450 has 24 divisors (see below), whose sum is σ = 2260017418080. Its totient is φ = 486007095600.

The previous prime is 1215040433447. The next prime is 1215040433501. The reversal of 1215040433450 is 543340405121.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2904611 + ... + 3296489.

It is an arithmetic number, because the mean of its divisors is an integer number (94167392420).

Almost surely, 2^{1215040433450} is an apocalyptic number.

1215040433450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215040433450 is a deficient number, since it is larger than the sum of its proper divisors (1044976984630).

1215040433450 is a wasteful number, since it uses less digits than its factorization.

1215040433450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453902 (or 453897 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1215040433450 its reverse (543340405121), we get a palindrome (1758380838571).

The spelling of 1215040433450 in words is "one trillion, two hundred fifteen billion, forty million, four hundred thirty-three thousand, four hundred fifty".