83198694451 has 4 divisors (see below), whose sum is σ = 83251790272. Its totient is φ = 83145598632.

The previous prime is 83198694379. The next prime is 83198694473. The reversal of 83198694451 is 15449689138.

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

It is a cyclic number.

It is not a de Polignac number, because 83198694451 - 2⁹ = 83198693939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83198695451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26545560 + ... + 26548693.

It is an arithmetic number, because the mean of its divisors is an integer number (20812947568).

Almost surely, 2^83198694451 is an apocalyptic number.

83198694451 is a deficient number, since it is larger than the sum of its proper divisors (53095821).

83198694451 is a wasteful number, since it uses less digits than its factorization.

83198694451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53095820.

The product of its digits is 7464960, while the sum is 58.

The spelling of 83198694451 in words is "eighty-three billion, one hundred ninety-eight million, six hundred ninety-four thousand, four hundred fifty-one".