78603087603881 has 4 divisors (see below), whose sum is σ = 79891662810564. Its totient is φ = 77314512397200.

The previous prime is 78603087603869. The next prime is 78603087603893. The reversal of 78603087603881 is 18830678030687.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (78603087603869) and next prime (78603087603893).

It can be written as a sum of positive squares in 2 ways, for example, as 13311435498256 + 65291652105625 = 3648484^2 + 8080325^2 .

It is a cyclic number.

It is not a de Polignac number, because 78603087603881 - 2¹⁰ = 78603087602857 is a prime.

It is a super-2 number, since 2×78603087603881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78603089603881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644287603250 + ... + 644287603371.

It is an arithmetic number, because the mean of its divisors is an integer number (19972915702641).

Almost surely, 2^{78603087603881} is an apocalyptic number.

It is an amenable number.

78603087603881 is a deficient number, since it is larger than the sum of its proper divisors (1288575206683).

78603087603881 is a wasteful number, since it uses less digits than its factorization.

78603087603881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288575206682.

The product of its (nonzero) digits is 65028096, while the sum is 65.

The spelling of 78603087603881 in words is "seventy-eight trillion, six hundred three billion, eighty-seven million, six hundred three thousand, eight hundred eighty-one".