80421540413 has 2 divisors, whose sum is σ = 80421540414. Its totient is φ = 80421540412.

The previous prime is 80421540403. The next prime is 80421540461. The reversal of 80421540413 is 31404512408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43506450724 + 36915089689 = 208582^2 + 192133^2 .

It is a cyclic number.

It is not a de Polignac number, because 80421540413 - 2¹⁶ = 80421474877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80421540413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80421540403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40210770206 + 40210770207.

It is an arithmetic number, because the mean of its divisors is an integer number (40210770207).

Almost surely, 2^80421540413 is an apocalyptic number.

It is an amenable number.

80421540413 is a deficient number, since it is larger than the sum of its proper divisors (1).

80421540413 is an equidigital number, since it uses as much as digits as its factorization.

80421540413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 80421540413 in words is "eighty billion, four hundred twenty-one million, five hundred forty thousand, four hundred thirteen".