80362718642 has 4 divisors (see below), whose sum is σ = 120544077966. Its totient is φ = 40181359320.

The previous prime is 80362718633. The next prime is 80362718651. The reversal of 80362718642 is 24681726308.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (80362718633) and next prime (80362718651).

It can be written as a sum of positive squares in only one way, i.e., 76933562161 + 3429156481 = 277369^2 + 58559^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20090679659 + ... + 20090679662.

Almost surely, 2^80362718642 is an apocalyptic number.

80362718642 is a deficient number, since it is larger than the sum of its proper divisors (40181359324).

80362718642 is a wasteful number, since it uses less digits than its factorization.

80362718642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40181359323.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 80362718642 in words is "eighty billion, three hundred sixty-two million, seven hundred eighteen thousand, six hundred forty-two".