5465820781 has 2 divisors, whose sum is σ = 5465820782. Its totient is φ = 5465820780.

The previous prime is 5465820779. The next prime is 5465820799. The reversal of 5465820781 is 1870285645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5142180681 + 323640100 = 71709^2 + 17990^2 .

It is a cyclic number.

It is not a de Polignac number, because 5465820781 - 2¹ = 5465820779 is a prime.

It is a super-2 number, since 2×5465820781² = 59750393620022899922, which contains 22 as substring.

Together with 5465820779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5465824781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2732910390 + 2732910391.

It is an arithmetic number, because the mean of its divisors is an integer number (2732910391).

Almost surely, 2^5465820781 is an apocalyptic number.

It is an amenable number.

5465820781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5465820781 is an equidigital number, since it uses as much as digits as its factorization.

5465820781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 5465820781 is about 73931.1895007784. The cubic root of 5465820781 is about 1761.5100655973.

The spelling of 5465820781 in words is "five billion, four hundred sixty-five million, eight hundred twenty thousand, seven hundred eighty-one".