84487771945 has 8 divisors (see below), whose sum is σ = 101417117760. Its totient is φ = 67569023280.

The previous prime is 84487771937. The next prime is 84487771967. The reversal of 84487771945 is 54917778448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84487771945 - 2³ = 84487771937 is a prime.

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, 2631735 + ... + 2663644.

It is an arithmetic number, because the mean of its divisors is an integer number (12677139720).

Almost surely, 2^84487771945 is an apocalyptic number.

It is an amenable number.

84487771945 is a deficient number, since it is larger than the sum of its proper divisors (16929345815).

84487771945 is a wasteful number, since it uses less digits than its factorization.

84487771945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5298575.

The product of its digits is 63221760, while the sum is 64.

The spelling of 84487771945 in words is "eighty-four billion, four hundred eighty-seven million, seven hundred seventy-one thousand, nine hundred forty-five".