815401082254 has 16 divisors (see below), whose sum is σ = 1334310500016. Its totient is φ = 370631905600.

The previous prime is 815401082173. The next prime is 815401082261. The reversal of 815401082254 is 452280104518.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821624 + ... + 2224660.

It is an arithmetic number, because the mean of its divisors is an integer number (83394406251).

Almost surely, 2^815401082254 is an apocalyptic number.

815401082254 is a deficient number, since it is larger than the sum of its proper divisors (518909417762).

815401082254 is a wasteful number, since it uses less digits than its factorization.

815401082254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495011.

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 815401082254 in words is "eight hundred fifteen billion, four hundred one million, eighty-two thousand, two hundred fifty-four".