83451869951 has 4 divisors (see below), whose sum is σ = 83455105272. Its totient is φ = 83448634632.

The previous prime is 83451869927. The next prime is 83451869989. The reversal of 83451869951 is 15996815438.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83451869951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83451839951) 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, 1578656 + ... + 1630661.

It is an arithmetic number, because the mean of its divisors is an integer number (20863776318).

Almost surely, 2^83451869951 is an apocalyptic number.

83451869951 is a deficient number, since it is larger than the sum of its proper divisors (3235321).

83451869951 is a wasteful number, since it uses less digits than its factorization.

83451869951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235320.

The product of its digits is 9331200, while the sum is 59.

The spelling of 83451869951 in words is "eighty-three billion, four hundred fifty-one million, eight hundred sixty-nine thousand, nine hundred fifty-one".