80720472922 has 4 divisors (see below), whose sum is σ = 121080709386. Its totient is φ = 40360236460.

The previous prime is 80720472893. The next prime is 80720472941. The reversal of 80720472922 is 22927402708.

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

It can be written as a sum of positive squares in only one way, i.e., 73510934641 + 7209538281 = 271129^2 + 84909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20180118229 + ... + 20180118232.

Almost surely, 2^80720472922 is an apocalyptic number.

80720472922 is a deficient number, since it is larger than the sum of its proper divisors (40360236464).

80720472922 is a wasteful number, since it uses less digits than its factorization.

80720472922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40360236463.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 80720472922 in words is "eighty billion, seven hundred twenty million, four hundred seventy-two thousand, nine hundred twenty-two".