8121876454 has 16 divisors (see below), whose sum is σ = 12445705728. Its totient is φ = 3973359112.

The previous prime is 8121876443. The next prime is 8121876523. The reversal of 8121876454 is 4546781218.

It is a super-2 number, since 2×8121876454² (a number of 21 digits) contains 22 as substring.

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, 365877 + ... + 387439.

It is an arithmetic number, because the mean of its divisors is an integer number (777856608).

Almost surely, 2^8121876454 is an apocalyptic number.

8121876454 is a deficient number, since it is larger than the sum of its proper divisors (4323829274).

8121876454 is a wasteful number, since it uses less digits than its factorization.

8121876454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25619.

The product of its digits is 430080, while the sum is 46.

The square root of 8121876454 is about 90121.4539052716. The cubic root of 8121876454 is about 2010.1052273648.

The spelling of 8121876454 in words is "eight billion, one hundred twenty-one million, eight hundred seventy-six thousand, four hundred fifty-four".