1215545420411 has 8 divisors (see below), whose sum is σ = 1389201538560. Its totient is φ = 1041890995368.

The previous prime is 1215545420399. The next prime is 1215545420429. The reversal of 1215545420411 is 1140245455121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1215545420411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215545420471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2194520 + ... + 2692026.

It is an arithmetic number, because the mean of its divisors is an integer number (173650192320).

Almost surely, 2^{1215545420411} is an apocalyptic number.

1215545420411 is a deficient number, since it is larger than the sum of its proper divisors (173656118149).

1215545420411 is an equidigital number, since it uses as much as digits as its factorization.

1215545420411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846553.

The product of its (nonzero) digits is 32000, while the sum is 35.

The spelling of 1215545420411 in words is "one trillion, two hundred fifteen billion, five hundred forty-five million, four hundred twenty thousand, four hundred eleven".