1215434430552 has 64 divisors (see below), whose sum is σ = 3155050764000. Its totient is φ = 389720059904.

The previous prime is 1215434430479. The next prime is 1215434430577. The reversal of 1215434430552 is 2550344345121.

It is a super-2 number, since 2×1215434430552² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1215434430552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3058713 + ... + 3433160.

Almost surely, 2^{1215434430552} is an apocalyptic number.

1215434430552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1215434430552 is an abundant number, since it is smaller than the sum of its proper divisors (1939616333448).

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

1215434430552 is a wasteful number, since it uses less digits than its factorization.

1215434430552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492180 (or 6492176 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 1215434430552 its reverse (2550344345121), we get a palindrome (3765778775673).

The spelling of 1215434430552 in words is "one trillion, two hundred fifteen billion, four hundred thirty-four million, four hundred thirty thousand, five hundred fifty-two".