2602521781043 has 2 divisors, whose sum is σ = 2602521781044. Its totient is φ = 2602521781042.

The previous prime is 2602521780979. The next prime is 2602521781109. The reversal of 2602521781043 is 3401871252062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2602521781043 - 2⁶ = 2602521780979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2602521784043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1301260890521 + 1301260890522.

It is an arithmetic number, because the mean of its divisors is an integer number (1301260890522).

Almost surely, 2^{2602521781043} is an apocalyptic number.

2602521781043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2602521781043 is an equidigital number, since it uses as much as digits as its factorization.

2602521781043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 2602521781043 in words is "two trillion, six hundred two billion, five hundred twenty-one million, seven hundred eighty-one thousand, forty-three".