8061978615 has 16 divisors (see below), whose sum is σ = 12903289728. Its totient is φ = 4298347296.

The previous prime is 8061978577. The next prime is 8061978623. The reversal of 8061978615 is 5168791608.

It is not a de Polignac number, because 8061978615 - 2¹⁰ = 8061977591 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36517 + ... + 132126.

It is an arithmetic number, because the mean of its divisors is an integer number (806455608).

Almost surely, 2^8061978615 is an apocalyptic number.

8061978615 is a deficient number, since it is larger than the sum of its proper divisors (4841311113).

8061978615 is a wasteful number, since it uses less digits than its factorization.

8061978615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171838.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 8061978615 is about 89788.5216216416. The cubic root of 8061978615 is about 2005.1516036799.

The spelling of 8061978615 in words is "eight billion, sixty-one million, nine hundred seventy-eight thousand, six hundred fifteen".