84720638720344 has 32 divisors (see below), whose sum is σ = 173406902941440. Its totient is φ = 38483895152800.

The previous prime is 84720638720321. The next prime is 84720638720353. The reversal of 84720638720344 is 44302783602748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318442324 + ... + 318708259.

It is an arithmetic number, because the mean of its divisors is an integer number (5418965716920).

Almost surely, 2^{84720638720344} is an apocalyptic number.

It is an amenable number.

84720638720344 is an abundant number, since it is smaller than the sum of its proper divisors (88686264221096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84720638720344 is a wasteful number, since it uses less digits than its factorization.

84720638720344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637152111 (or 637152107 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 58.

The spelling of 84720638720344 in words is "eighty-four trillion, seven hundred twenty billion, six hundred thirty-eight million, seven hundred twenty thousand, three hundred forty-four".