83853778454 has 8 divisors (see below), whose sum is σ = 127193933880. Its totient is φ = 41455800496.

The previous prime is 83853778433. The next prime is 83853778457. The reversal of 83853778454 is 45487735838.

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

It is a super-2 number, since 2×83853778454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83853778457) 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, 235544144 + ... + 235544499.

It is an arithmetic number, because the mean of its divisors is an integer number (15899241735).

Almost surely, 2^83853778454 is an apocalyptic number.

83853778454 is a deficient number, since it is larger than the sum of its proper divisors (43340155426).

83853778454 is a wasteful number, since it uses less digits than its factorization.

83853778454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471088734.

The product of its digits is 90316800, while the sum is 62.

The spelling of 83853778454 in words is "eighty-three billion, eight hundred fifty-three million, seven hundred seventy-eight thousand, four hundred fifty-four".