8021081378698 has 16 divisors (see below), whose sum is σ = 12766879393920. Its totient is φ = 3766473982656.

The previous prime is 8021081378683. The next prime is 8021081378729. The reversal of 8021081378698 is 8968731801208.

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, 254751168 + ... + 254782651.

It is an arithmetic number, because the mean of its divisors is an integer number (797929962120).

Almost surely, 2^{8021081378698} is an apocalyptic number.

8021081378698 is a deficient number, since it is larger than the sum of its proper divisors (4745798015222).

8021081378698 is a wasteful number, since it uses less digits than its factorization.

8021081378698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509534301.

The product of its (nonzero) digits is 9289728, while the sum is 61.

The spelling of 8021081378698 in words is "eight trillion, twenty-one billion, eighty-one million, three hundred seventy-eight thousand, six hundred ninety-eight".