464589148781 has 2 divisors, whose sum is σ = 464589148782. Its totient is φ = 464589148780.

The previous prime is 464589148703. The next prime is 464589148801. The reversal of 464589148781 is 187841985464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442763814025 + 21825334756 = 665405^2 + 147734^2 .

It is a cyclic number.

It is not a de Polignac number, because 464589148781 - 2¹⁸ = 464588886637 is a prime.

It is a super-2 number, since 2×464589148781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464589148081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232294574390 + 232294574391.

It is an arithmetic number, because the mean of its divisors is an integer number (232294574391).

Almost surely, 2^464589148781 is an apocalyptic number.

It is an amenable number.

464589148781 is a deficient number, since it is larger than the sum of its proper divisors (1).

464589148781 is an equidigital number, since it uses as much as digits as its factorization.

464589148781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61931520, while the sum is 65.

The spelling of 464589148781 in words is "four hundred sixty-four billion, five hundred eighty-nine million, one hundred forty-eight thousand, seven hundred eighty-one".