80021702005490 has 32 divisors (see below), whose sum is σ = 164617619362560. Its totient is φ = 27435754338624.

The previous prime is 80021702005489. The next prime is 80021702005499. The reversal of 80021702005490 is 9450020712008.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80021702005499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209019 + ... + 12842241.

It is an arithmetic number, because the mean of its divisors is an integer number (5144300605080).

Almost surely, 2^{80021702005490} is an apocalyptic number.

80021702005490 is an abundant number, since it is smaller than the sum of its proper divisors (84595917357070).

80021702005490 is a wasteful number, since it uses less digits than its factorization.

80021702005490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10740746.

The product of its (nonzero) digits is 40320, while the sum is 38.

Adding to 80021702005490 its reverse (9450020712008), we get a palindrome (89471722717498).

The spelling of 80021702005490 in words is "eighty trillion, twenty-one billion, seven hundred two million, five thousand, four hundred ninety".