8100255778 has 16 divisors (see below), whose sum is σ = 12950319744. Its totient is φ = 3786638400.

The previous prime is 8100255767. The next prime is 8100255833. The reversal of 8100255778 is 8775520018.

It is a super-2 number, since 2×8100255778² (a number of 21 digits) contains 22 as substring.

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, 783750 + ... + 794017.

It is an arithmetic number, because the mean of its divisors is an integer number (809394984).

Almost surely, 2^8100255778 is an apocalyptic number.

8100255778 is a deficient number, since it is larger than the sum of its proper divisors (4850063966).

8100255778 is a wasteful number, since it uses less digits than its factorization.

8100255778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577937.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 8100255778 is about 90001.4209776712. The cubic root of 8100255778 is about 2008.3199890636.

The spelling of 8100255778 in words is "eight billion, one hundred million, two hundred fifty-five thousand, seven hundred seventy-eight".