84621247781003 has 2 divisors, whose sum is σ = 84621247781004. Its totient is φ = 84621247781002.

The previous prime is 84621247780999. The next prime is 84621247781017. The reversal of 84621247781003 is 30018774212648.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84621247781003 - 2² = 84621247780999 is a prime.

It is not a weakly prime, because it can be changed into another prime (84621247741003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42310623890501 + 42310623890502.

It is an arithmetic number, because the mean of its divisors is an integer number (42310623890502).

Almost surely, 2^{84621247781003} is an apocalyptic number.

84621247781003 is a deficient number, since it is larger than the sum of its proper divisors (1).

84621247781003 is an equidigital number, since it uses as much as digits as its factorization.

84621247781003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 84621247781003 in words is "eighty-four trillion, six hundred twenty-one billion, two hundred forty-seven million, seven hundred eighty-one thousand, three".