81078000007608 has 24 divisors (see below), whose sum is σ = 219586250020800. Its totient is φ = 27026000002512.

The previous prime is 81078000007591. The next prime is 81078000007637. The reversal of 81078000007608 is 80670000087018.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 563041666648 + ... + 563041666791.

It is an arithmetic number, because the mean of its divisors is an integer number (9149427084200).

Almost surely, 2^{81078000007608} is an apocalyptic number.

It is an amenable number.

81078000007608 is an abundant number, since it is smaller than the sum of its proper divisors (138508250013192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81078000007608 is a wasteful number, since it uses less digits than its factorization.

81078000007608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126083333451 (or 1126083333444 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 81078000007608 in words is "eighty-one trillion, seventy-eight billion, seven thousand, six hundred eight".