84579532913 has 2 divisors, whose sum is σ = 84579532914. Its totient is φ = 84579532912.

The previous prime is 84579532811. The next prime is 84579532927. The reversal of 84579532913 is 31923597548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82677526369 + 1902006544 = 287537^2 + 43612^2 .

It is a cyclic number.

It is not a de Polignac number, because 84579532913 - 2¹⁴ = 84579516529 is a prime.

It is not a weakly prime, because it can be changed into another prime (84579534913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42289766456 + 42289766457.

It is an arithmetic number, because the mean of its divisors is an integer number (42289766457).

Almost surely, 2^84579532913 is an apocalyptic number.

It is an amenable number.

84579532913 is a deficient number, since it is larger than the sum of its proper divisors (1).

84579532913 is an equidigital number, since it uses as much as digits as its factorization.

84579532913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 56.

The spelling of 84579532913 in words is "eighty-four billion, five hundred seventy-nine million, five hundred thirty-two thousand, nine hundred thirteen".