1290485346361 has 4 divisors (see below), whose sum is σ = 1308163227892. Its totient is φ = 1272807464832.

The previous prime is 1290485346347. The next prime is 1290485346383. The reversal of 1290485346361 is 1636435840921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 876432992400 + 414052353961 = 936180^2 + 643469^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290485346361 - 2¹³ = 1290485338169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1290485346299 and 1290485346308.

It is not an unprimeable number, because it can be changed into a prime (1290485346331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8838940656 + ... + 8838940801.

It is an arithmetic number, because the mean of its divisors is an integer number (327040806973).

Almost surely, 2^{1290485346361} is an apocalyptic number.

It is an amenable number.

1290485346361 is a deficient number, since it is larger than the sum of its proper divisors (17677881531).

1290485346361 is an equidigital number, since it uses as much as digits as its factorization.

1290485346361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17677881530.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 1290485346361 in words is "one trillion, two hundred ninety billion, four hundred eighty-five million, three hundred forty-six thousand, three hundred sixty-one".