84621247781043 has 16 divisors (see below), whose sum is σ = 115878719303840. Its totient is φ = 54888996370176.

The previous prime is 84621247781039. The next prime is 84621247781099. The reversal of 84621247781043 is 34018774212648.

It is a happy number.

It is not a de Polignac number, because 84621247781043 - 2² = 84621247781039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84621247781003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10306671 + ... + 16597287.

It is an arithmetic number, because the mean of its divisors is an integer number (7242419956490).

Almost surely, 2^{84621247781043} is an apocalyptic number.

84621247781043 is a deficient number, since it is larger than the sum of its proper divisors (31257471522797).

84621247781043 is a wasteful number, since it uses less digits than its factorization.

84621247781043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411846.

The product of its (nonzero) digits is 14450688, while the sum is 57.

The spelling of 84621247781043 in words is "eighty-four trillion, six hundred twenty-one billion, two hundred forty-seven million, seven hundred eighty-one thousand, forty-three".