80642280381 has 16 divisors (see below), whose sum is σ = 119786943360. Its totient is φ = 47914776000.

The previous prime is 80642280371. The next prime is 80642280413. The reversal of 80642280381 is 18308224608.

It is a happy number.

It is not a de Polignac number, because 80642280381 - 2¹⁵ = 80642247613 is a prime.

It is a super-2 number, since 2×80642280381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80642280331) 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, 35649745 + ... + 35652006.

It is an arithmetic number, because the mean of its divisors is an integer number (7486683960).

Almost surely, 2^80642280381 is an apocalyptic number.

It is an amenable number.

80642280381 is a deficient number, since it is larger than the sum of its proper divisors (39144662979).

80642280381 is a wasteful number, since it uses less digits than its factorization.

80642280381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71301796.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 80642280381 in words is "eighty billion, six hundred forty-two million, two hundred eighty thousand, three hundred eighty-one".