1213315055461 has 8 divisors (see below), whose sum is σ = 1220909302880. Its totient is φ = 1205722644912.

The previous prime is 1213315055441. The next prime is 1213315055473. The reversal of 1213315055461 is 1645505133121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213315055461 - 2⁵ = 1213315055429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213315055461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213315055411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878131 + ... + 1788223.

It is an arithmetic number, because the mean of its divisors is an integer number (152613662860).

Almost surely, 2^{1213315055461} is an apocalyptic number.

It is an amenable number.

1213315055461 is a deficient number, since it is larger than the sum of its proper divisors (7594247419).

1213315055461 is an equidigital number, since it uses as much as digits as its factorization.

1213315055461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918435.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 1213315055461 in words is "one trillion, two hundred thirteen billion, three hundred fifteen million, fifty-five thousand, four hundred sixty-one".