1216525415134 has 8 divisors (see below), whose sum is σ = 1887711851160. Its totient is φ = 587288131416.

The previous prime is 1216525415123. The next prime is 1216525415143. The reversal of 1216525415134 is 4315145256121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10487288004 + ... + 10487288119.

It is an arithmetic number, because the mean of its divisors is an integer number (235963981395).

Almost surely, 2^{1216525415134} is an apocalyptic number.

1216525415134 is a deficient number, since it is larger than the sum of its proper divisors (671186436026).

1216525415134 is a wasteful number, since it uses less digits than its factorization.

1216525415134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20974576154.

The product of its digits is 144000, while the sum is 40.

The spelling of 1216525415134 in words is "one trillion, two hundred sixteen billion, five hundred twenty-five million, four hundred fifteen thousand, one hundred thirty-four".