8151905678 has 48 divisors (see below), whose sum is σ = 14673931344. Its totient is φ = 3384944640.

The previous prime is 8151905677. The next prime is 8151905681. The reversal of 8151905678 is 8765091518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8151905677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390350 + ... + 410702.

It is an arithmetic number, because the mean of its divisors is an integer number (305706903).

Almost surely, 2^8151905678 is an apocalyptic number.

8151905678 is a deficient number, since it is larger than the sum of its proper divisors (6522025666).

8151905678 is a wasteful number, since it uses less digits than its factorization.

8151905678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20497 (or 20490 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 50.

The square root of 8151905678 is about 90287.9043836991. The cubic root of 8151905678 is about 2012.5795184711.

The spelling of 8151905678 in words is "eight billion, one hundred fifty-one million, nine hundred five thousand, six hundred seventy-eight".