83273778454 has 4 divisors (see below), whose sum is σ = 124910667684. Its totient is φ = 41636889226.

The previous prime is 83273778433. The next prime is 83273778481. The reversal of 83273778454 is 45487737238.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 20818444612 + ... + 20818444615.

It is an arithmetic number, because the mean of its divisors is an integer number (31227666921).

Almost surely, 2^83273778454 is an apocalyptic number.

83273778454 is a deficient number, since it is larger than the sum of its proper divisors (41636889230).

83273778454 is a wasteful number, since it uses less digits than its factorization.

83273778454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41636889229.

The product of its digits is 31610880, while the sum is 58.

The spelling of 83273778454 in words is "eighty-three billion, two hundred seventy-three million, seven hundred seventy-eight thousand, four hundred fifty-four".