1215102052404 has 72 divisors (see below), whose sum is σ = 3100079848320. Its totient is φ = 401269516032.

The previous prime is 1215102052399. The next prime is 1215102052427. The reversal of 1215102052404 is 4042502015121.

It is a happy number.

1215102052404 is a `hidden beast` number, since 1 + 2 + 1 + 51 + 0 + 205 + 2 + 404 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9156277 + ... + 9288035.

It is an arithmetic number, because the mean of its divisors is an integer number (43056664560).

Almost surely, 2^{1215102052404} is an apocalyptic number.

It is an amenable number.

1215102052404 is an abundant number, since it is smaller than the sum of its proper divisors (1884977795916).

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

1215102052404 is a wasteful number, since it uses less digits than its factorization.

1215102052404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134149 (or 134144 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1215102052404 its reverse (4042502015121), we get a palindrome (5257604067525).

The spelling of 1215102052404 in words is "one trillion, two hundred fifteen billion, one hundred two million, fifty-two thousand, four hundred four".