243452901877 has 2 divisors, whose sum is σ = 243452901878. Its totient is φ = 243452901876.

The previous prime is 243452901863. The next prime is 243452901911. The reversal of 243452901877 is 778109254342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227343961636 + 16108940241 = 476806^2 + 126921^2 .

It is a cyclic number.

It is not a de Polignac number, because 243452901877 - 2²⁷ = 243318684149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243452901277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121726450938 + 121726450939.

It is an arithmetic number, because the mean of its divisors is an integer number (121726450939).

Almost surely, 2^243452901877 is an apocalyptic number.

It is an amenable number.

243452901877 is a deficient number, since it is larger than the sum of its proper divisors (1).

243452901877 is an equidigital number, since it uses as much as digits as its factorization.

243452901877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 243452901877 in words is "two hundred forty-three billion, four hundred fifty-two million, nine hundred one thousand, eight hundred seventy-seven".