783144650461 has 2 divisors, whose sum is σ = 783144650462. Its totient is φ = 783144650460.

The previous prime is 783144650447. The next prime is 783144650549. The reversal of 783144650461 is 164056441387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459860296900 + 323284353561 = 678130^2 + 568581^2 .

It is an emirp because it is prime and its reverse (164056441387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 783144650461 - 2²¹ = 783142553309 is a prime.

It is a super-2 number, since 2×783144650461² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (783144650411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391572325230 + 391572325231.

It is an arithmetic number, because the mean of its divisors is an integer number (391572325231).

Almost surely, 2^783144650461 is an apocalyptic number.

It is an amenable number.

783144650461 is a deficient number, since it is larger than the sum of its proper divisors (1).

783144650461 is an equidigital number, since it uses as much as digits as its factorization.

783144650461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 783144650461 in words is "seven hundred eighty-three billion, one hundred forty-four million, six hundred fifty thousand, four hundred sixty-one".