80716009501 has 4 divisors (see below), whose sum is σ = 80756029372. Its totient is φ = 80675989632.

The previous prime is 80716009499. The next prime is 80716009547. The reversal of 80716009501 is 10590061708.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39421705401 + 41294304100 = 198549^2 + 203210^2 .

It is a cyclic number.

It is not a de Polignac number, because 80716009501 - 2¹ = 80716009499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80716009001) 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, 20006910 + ... + 20010943.

It is an arithmetic number, because the mean of its divisors is an integer number (20189007343).

Almost surely, 2^80716009501 is an apocalyptic number.

It is an amenable number.

80716009501 is a deficient number, since it is larger than the sum of its proper divisors (40019871).

80716009501 is a wasteful number, since it uses less digits than its factorization.

80716009501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40019870.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 80716009501 in words is "eighty billion, seven hundred sixteen million, nine thousand, five hundred one".