83851015838 has 4 divisors (see below), whose sum is σ = 125776523760. Its totient is φ = 41925507918.

The previous prime is 83851015757. The next prime is 83851015873.

It is a happy number.

83851015838 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×83851015838³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20962753958 + ... + 20962753961.

It is an arithmetic number, because the mean of its divisors is an integer number (31444130940).

Almost surely, 2^83851015838 is an apocalyptic number.

83851015838 is a deficient number, since it is larger than the sum of its proper divisors (41925507922).

83851015838 is a wasteful number, since it uses less digits than its factorization.

83851015838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41925507921.

The product of its (nonzero) digits is 921600, while the sum is 50.

The spelling of 83851015838 in words is "eighty-three billion, eight hundred fifty-one million, fifteen thousand, eight hundred thirty-eight".