84253561478 has 8 divisors (see below), whose sum is σ = 127631633040. Its totient is φ = 41709683800.

The previous prime is 84253561477. The next prime is 84253561519. The reversal of 84253561478 is 87416535248.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84253561477) 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, 208548218 + ... + 208548621.

It is an arithmetic number, because the mean of its divisors is an integer number (15953954130).

Almost surely, 2^84253561478 is an apocalyptic number.

84253561478 is a deficient number, since it is larger than the sum of its proper divisors (43378071562).

84253561478 is a wasteful number, since it uses less digits than its factorization.

84253561478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417096942.

The product of its digits is 6451200, while the sum is 53.

The spelling of 84253561478 in words is "eighty-four billion, two hundred fifty-three million, five hundred sixty-one thousand, four hundred seventy-eight".