1465677256261 has 2 divisors, whose sum is σ = 1465677256262. Its totient is φ = 1465677256260.

The previous prime is 1465677256249. The next prime is 1465677256301. The reversal of 1465677256261 is 1626527765641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005545667361 + 460131588900 = 1002769^2 + 678330^2 .

It is an emirp because it is prime and its reverse (1626527765641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1465677256261 - 2³⁵ = 1431317517893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1465677256196 and 1465677256205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1465677256361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732838628130 + 732838628131.

It is an arithmetic number, because the mean of its divisors is an integer number (732838628131).

Almost surely, 2^{1465677256261} is an apocalyptic number.

It is an amenable number.

1465677256261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1465677256261 is an equidigital number, since it uses as much as digits as its factorization.

1465677256261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 58.

The spelling of 1465677256261 in words is "one trillion, four hundred sixty-five billion, six hundred seventy-seven million, two hundred fifty-six thousand, two hundred sixty-one".