1213405015300 has 72 divisors (see below), whose sum is σ = 2679636304800. Its totient is φ = 476793630720.

The previous prime is 1213405015247. The next prime is 1213405015309. The reversal of 1213405015300 is 35105043121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1213405015309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8240119 + ... + 8386081.

It is an arithmetic number, because the mean of its divisors is an integer number (37217170900).

Almost surely, 2^{1213405015300} is an apocalyptic number.

1213405015300 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 1213405015300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339818152400).

1213405015300 is an abundant number, since it is smaller than the sum of its proper divisors (1466231289500).

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

1213405015300 is a wasteful number, since it uses less digits than its factorization.

1213405015300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147445 (or 147438 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 1213405015300 in words is "one trillion, two hundred thirteen billion, four hundred five million, fifteen thousand, three hundred".