8101649678 has 16 divisors (see below), whose sum is σ = 12547768320. Its totient is φ = 3919128600.

The previous prime is 8101649663. The next prime is 8101649681. The reversal of 8101649678 is 8769461018.

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, 257363 + ... + 287121.

It is an arithmetic number, because the mean of its divisors is an integer number (784235520).

Almost surely, 2^8101649678 is an apocalyptic number.

8101649678 is a deficient number, since it is larger than the sum of its proper divisors (4446118642).

8101649678 is a wasteful number, since it uses less digits than its factorization.

8101649678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34183.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 8101649678 is about 90009.1644111865. The cubic root of 8101649678 is about 2008.4351803510.

The spelling of 8101649678 in words is "eight billion, one hundred one million, six hundred forty-nine thousand, six hundred seventy-eight".