1290944316535 has 4 divisors (see below), whose sum is σ = 1549133179848. Its totient is φ = 1032755453224.

The previous prime is 1290944316527. The next prime is 1290944316551. The reversal of 1290944316535 is 5356134490921.

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

It is a cyclic number.

It is not a de Polignac number, because 1290944316535 - 2³ = 1290944316527 is a prime.

It is a Duffinian number.

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, 129094431649 + ... + 129094431658.

It is an arithmetic number, because the mean of its divisors is an integer number (387283294962).

Almost surely, 2^{1290944316535} is an apocalyptic number.

1290944316535 is a deficient number, since it is larger than the sum of its proper divisors (258188863313).

1290944316535 is an equidigital number, since it uses as much as digits as its factorization.

1290944316535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258188863312.

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 1290944316535 in words is "one trillion, two hundred ninety billion, nine hundred forty-four million, three hundred sixteen thousand, five hundred thirty-five".