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999423737857 is a prime number
BaseRepresentation
bin11101000101100100100…
…11000000000000000001
310112112200120002021102201
432202302103000000001
5112333304434102412
62043043503113201
7132130436414326
oct16426223000001
93475616067381
10999423737857
11355942710696
12141840ba2801
1373325a9181c
143652dabcb4d
151aee5d86e57
hexe8b24c0001

999423737857 has 2 divisors, whose sum is σ = 999423737858. Its totient is φ = 999423737856.

The previous prime is 999423737849. The next prime is 999423737867. The reversal of 999423737857 is 758737324999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789839235441 + 209584502416 = 888729^2 + 457804^2 .

It is a cyclic number.

It is not a de Polignac number, because 999423737857 - 23 = 999423737849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999423737857.

It is not a weakly prime, because it can be changed into another prime (999423737867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499711868928 + 499711868929.

It is an arithmetic number, because the mean of its divisors is an integer number (499711868929).

Almost surely, 2999423737857 is an apocalyptic number.

It is an amenable number.

999423737857 is a deficient number, since it is larger than the sum of its proper divisors (1).

999423737857 is an equidigital number, since it uses as much as digits as its factorization.

999423737857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720135360, while the sum is 73.

The spelling of 999423737857 in words is "nine hundred ninety-nine billion, four hundred twenty-three million, seven hundred thirty-seven thousand, eight hundred fifty-seven".