1217061187050 has 96 divisors (see below), whose sum is σ = 3177950973120. Its totient is φ = 307392537600.

The previous prime is 1217061187037. The next prime is 1217061187057. The reversal of 1217061187050 is 507811607121.

It is not an unprimeable number, because it can be changed into a prime (1217061187057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12036504 + ... + 12137196.

It is an arithmetic number, because the mean of its divisors is an integer number (33103655970).

Almost surely, 2^{1217061187050} is an apocalyptic number.

1217061187050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217061187050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588975486560).

1217061187050 is an abundant number, since it is smaller than the sum of its proper divisors (1960889786070).

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

1217061187050 is a wasteful number, since it uses less digits than its factorization.

1217061187050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104968 (or 104963 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 39.

The spelling of 1217061187050 in words is "one trillion, two hundred seventeen billion, sixty-one million, one hundred eighty-seven thousand, fifty".