80502576871421 has 4 divisors (see below), whose sum is σ = 80548816147644. Its totient is φ = 80456337595200.

The previous prime is 80502576871417. The next prime is 80502576871471. The reversal of 80502576871421 is 12417867520508.

It is a happy number.

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 4070588704900 + 76431988166521 = 2017570^2 + 8742539^2 .

It is a cyclic number.

It is not a de Polignac number, because 80502576871421 - 2² = 80502576871417 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 (80502576871471) 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, 23119635500 + ... + 23119638981.

It is an arithmetic number, because the mean of its divisors is an integer number (20137204036911).

Almost surely, 2^{80502576871421} is an apocalyptic number.

It is an amenable number.

80502576871421 is a deficient number, since it is larger than the sum of its proper divisors (46239276223).

80502576871421 is a wasteful number, since it uses less digits than its factorization.

80502576871421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46239276222.

The product of its (nonzero) digits is 7526400, while the sum is 56.

The spelling of 80502576871421 in words is "eighty trillion, five hundred two billion, five hundred seventy-six million, eight hundred seventy-one thousand, four hundred twenty-one".