1215140313400 has 192 divisors, whose sum is σ = 3068337988800. Its totient is φ = 444876226560.

The previous prime is 1215140313353. The next prime is 1215140313449. The reversal of 1215140313400 is 43130415121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159066781 + ... + 159074419.

It is an arithmetic number, because the mean of its divisors is an integer number (15980927025).

Almost surely, 2^{1215140313400} is an apocalyptic number.

1215140313400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215140313400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534168994400).

1215140313400 is an abundant number, since it is smaller than the sum of its proper divisors (1853197675400).

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

1215140313400 is a wasteful number, since it uses less digits than its factorization.

1215140313400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8178 (or 8169 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1215140313400 its reverse (43130415121), we get a palindrome (1258270728521).

The spelling of 1215140313400 in words is "one trillion, two hundred fifteen billion, one hundred forty million, three hundred thirteen thousand, four hundred".