1245305214261 has 8 divisors (see below), whose sum is σ = 1844896613760. Its totient is φ = 830203476156.

The previous prime is 1245305214221. The next prime is 1245305214311. The reversal of 1245305214261 is 1624125035421.

1245305214261 is a `hidden beast` number, since 1 + 2 + 4 + 5 + 30 + 521 + 42 + 61 = 666.

It is not a de Polignac number, because 1245305214261 - 2¹⁹ = 1245304689973 is a prime.

It is a super-2 number, since 2×1245305214261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245305214221) 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, 23061207645 + ... + 23061207698.

It is an arithmetic number, because the mean of its divisors is an integer number (230612076720).

Almost surely, 2^{1245305214261} is an apocalyptic number.

It is an amenable number.

1245305214261 is a deficient number, since it is larger than the sum of its proper divisors (599591399499).

1245305214261 is an equidigital number, since it uses as much as digits as its factorization.

1245305214261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46122415352 (or 46122415346 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 1245305214261 in words is "one trillion, two hundred forty-five billion, three hundred five million, two hundred fourteen thousand, two hundred sixty-one".