1426665413761 has 9 divisors (see below), whose sum is σ = 1659600105411. Its totient is φ = 1222848902352.

The previous prime is 1426665413743. The next prime is 1426665413777. The reversal of 1426665413761 is 1673145666241.

The square root of 1426665413761 is 1194431.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1424525796225 + 2139617536 = 1193535^2 + 46256^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1426665413761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1426665413699 and 1426665413708.

It is not an unprimeable number, because it can be changed into a prime (1426665413461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8275701 + ... + 8446333.

Almost surely, 2^{1426665413761} is an apocalyptic number.

1426665413761 is the 1194431-st square number.

1426665413761 is the 597216-th centered octagonal number.

It is an amenable number.

1426665413761 is a deficient number, since it is larger than the sum of its proper divisors (232934691650).

1426665413761 is an frugal number, since it uses more digits than its factorization.

1426665413761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341280 (or 170640 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 1426665413761 in words is "one trillion, four hundred twenty-six billion, six hundred sixty-five million, four hundred thirteen thousand, seven hundred sixty-one".