84621247781042 has 32 divisors (see below), whose sum is σ = 146209283960832. Its totient is φ = 35980185092544.

The previous prime is 84621247781039. The next prime is 84621247781099. The reversal of 84621247781042 is 24018774212648.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144673808 + ... + 145257540.

It is an arithmetic number, because the mean of its divisors is an integer number (4569040123776).

Almost surely, 2^{84621247781042} is an apocalyptic number.

84621247781042 is a deficient number, since it is larger than the sum of its proper divisors (61588036179790).

84621247781042 is a wasteful number, since it uses less digits than its factorization.

84621247781042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665402.

The product of its (nonzero) digits is 9633792, while the sum is 56.

The spelling of 84621247781042 in words is "eighty-four trillion, six hundred twenty-one billion, two hundred forty-seven million, seven hundred eighty-one thousand, forty-two".