84621247781044 has 96 divisors (see below), whose sum is σ = 164435772340224. Its totient is φ = 37856349820800.

The previous prime is 84621247781039. The next prime is 84621247781099. The reversal of 84621247781044 is 44018774212648.

It is a self number, because there is not a number n which added to its sum of digits gives 84621247781044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331768707 + ... + 332023669.

It is an arithmetic number, because the mean of its divisors is an integer number (1712872628544).

Almost surely, 2^{84621247781044} is an apocalyptic number.

It is an amenable number.

84621247781044 is a deficient number, since it is larger than the sum of its proper divisors (79814524559180).

84621247781044 is a wasteful number, since it uses less digits than its factorization.

84621247781044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256157 (or 256155 counting only the distinct ones).

The product of its (nonzero) digits is 19267584, while the sum is 58.

The spelling of 84621247781044 in words is "eighty-four trillion, six hundred twenty-one billion, two hundred forty-seven million, seven hundred eighty-one thousand, forty-four".