83557772207 has 32 divisors (see below), whose sum is σ = 108991596672. Its totient is φ = 62164537344.

The previous prime is 83557772203. The next prime is 83557772231. The reversal of 83557772207 is 70227775538.

It is not a de Polignac number, because 83557772207 - 2² = 83557772203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83557772203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1666163 + ... + 1715579.

It is an arithmetic number, because the mean of its divisors is an integer number (3405987396).

Almost surely, 2^83557772207 is an apocalyptic number.

83557772207 is a deficient number, since it is larger than the sum of its proper divisors (25433824465).

83557772207 is a wasteful number, since it uses less digits than its factorization.

83557772207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50547.

The product of its (nonzero) digits is 5762400, while the sum is 53.

The spelling of 83557772207 in words is "eighty-three billion, five hundred fifty-seven million, seven hundred seventy-two thousand, two hundred seven".