80921401436 has 12 divisors (see below), whose sum is σ = 141636581520. Its totient is φ = 40453806720.

The previous prime is 80921401433. The next prime is 80921401453. The reversal of 80921401436 is 63410412908.

It is a self number, because there is not a number n which added to its sum of digits gives 80921401436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80921401433) 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, 1697045 + ... + 1744076.

It is an arithmetic number, because the mean of its divisors is an integer number (11803048460).

Almost surely, 2^80921401436 is an apocalyptic number.

It is an amenable number.

80921401436 is a deficient number, since it is larger than the sum of its proper divisors (60715180084).

80921401436 is a wasteful number, since it uses less digits than its factorization.

80921401436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447004 (or 3447002 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 80921401436 in words is "eighty billion, nine hundred twenty-one million, four hundred one thousand, four hundred thirty-six".