1205654508043 has 2 divisors, whose sum is σ = 1205654508044. Its totient is φ = 1205654508042.

The previous prime is 1205654508017. The next prime is 1205654508101. The reversal of 1205654508043 is 3408054565021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1205654508043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1205654508743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602827254021 + 602827254022.

It is an arithmetic number, because the mean of its divisors is an integer number (602827254022).

Almost surely, 2^{1205654508043} is an apocalyptic number.

1205654508043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205654508043 is an equidigital number, since it uses as much as digits as its factorization.

1205654508043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 1205654508043 in words is "one trillion, two hundred five billion, six hundred fifty-four million, five hundred eight thousand, forty-three".