8278561415 has 8 divisors (see below), whose sum is σ = 10276835040. Its totient is φ = 6394474912.

The previous prime is 8278561409. The next prime is 8278561427. The reversal of 8278561415 is 5141658728.

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

It is a cyclic number.

It is not a de Polignac number, because 8278561415 - 2⁴ = 8278561399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8278561415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28546619 + ... + 28546908.

It is an arithmetic number, because the mean of its divisors is an integer number (1284604380).

Almost surely, 2^8278561415 is an apocalyptic number.

8278561415 is a deficient number, since it is larger than the sum of its proper divisors (1998273625).

8278561415 is a wasteful number, since it uses less digits than its factorization.

8278561415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57093561.

The product of its digits is 537600, while the sum is 47.

The square root of 8278561415 is about 90986.6001947540. The cubic root of 8278561415 is about 2022.9491131510.

The spelling of 8278561415 in words is "eight billion, two hundred seventy-eight million, five hundred sixty-one thousand, four hundred fifteen".