80587742378011 has 4 divisors (see below), whose sum is σ = 87913900776024. Its totient is φ = 73261583980000.

The previous prime is 80587742377997. The next prime is 80587742378029. The reversal of 80587742378011 is 11087324778508.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80587742378011 is a prime.

It is a super-2 number, since 2×80587742378011² (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 (80587742378081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3663079198990 + ... + 3663079199011.

It is an arithmetic number, because the mean of its divisors is an integer number (21978475194006).

Almost surely, 2^{80587742378011} is an apocalyptic number.

80587742378011 is a deficient number, since it is larger than the sum of its proper divisors (7326158398013).

80587742378011 is a wasteful number, since it uses less digits than its factorization.

80587742378011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326158398012.

The product of its (nonzero) digits is 21073920, while the sum is 61.

The spelling of 80587742378011 in words is "eighty trillion, five hundred eighty-seven billion, seven hundred forty-two million, three hundred seventy-eight thousand, eleven".