84776974945 has 24 divisors (see below), whose sum is σ = 112238451576. Its totient is φ = 61423285248.

The previous prime is 84776974907. The next prime is 84776974967. The reversal of 84776974945 is 54947967748.

It can be written as a sum of positive squares in 12 ways, for example, as 27732907024 + 57044067921 = 166532^2 + 238839^2 .

It is not a de Polignac number, because 84776974945 - 2³¹ = 82629491297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 901704 + ... + 991273.

It is an arithmetic number, because the mean of its divisors is an integer number (4676602149).

Almost surely, 2^84776974945 is an apocalyptic number.

It is an amenable number.

84776974945 is a deficient number, since it is larger than the sum of its proper divisors (27461476631).

84776974945 is a wasteful number, since it uses less digits than its factorization.

84776974945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893061 (or 1893048 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 70.

The spelling of 84776974945 in words is "eighty-four billion, seven hundred seventy-six million, nine hundred seventy-four thousand, nine hundred forty-five".