83987564133 has 16 divisors (see below), whose sum is σ = 129349832256. Its totient is φ = 47907344640.

The previous prime is 83987564131. The next prime is 83987564149. The reversal of 83987564133 is 33146578938.

It is not a de Polignac number, because 83987564133 - 2¹ = 83987564131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83987564131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74854666 + ... + 74855787.

It is an arithmetic number, because the mean of its divisors is an integer number (8084364516).

Almost surely, 2^83987564133 is an apocalyptic number.

It is an amenable number.

83987564133 is a deficient number, since it is larger than the sum of its proper divisors (45362268123).

83987564133 is a wasteful number, since it uses less digits than its factorization.

83987564133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149710484.

The product of its digits is 13063680, while the sum is 57.

The spelling of 83987564133 in words is "eighty-three billion, nine hundred eighty-seven million, five hundred sixty-four thousand, one hundred thirty-three".