83154445138 has 8 divisors (see below), whose sum is σ = 125966635020. Its totient is φ = 41165566800.

The previous prime is 83154445123. The next prime is 83154445139.

83154445138 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 74285137809 + 8869307329 = 272553^2 + 94177^2 .

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

It is not an unprimeable number, because it can be changed into a prime (83154445139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205827633 + ... + 205828036.

Almost surely, 2^83154445138 is an apocalyptic number.

83154445138 is a deficient number, since it is larger than the sum of its proper divisors (42812189882).

83154445138 is a wasteful number, since it uses less digits than its factorization.

83154445138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411655772.

The product of its digits is 921600, while the sum is 46.

The spelling of 83154445138 in words is "eighty-three billion, one hundred fifty-four million, four hundred forty-five thousand, one hundred thirty-eight".