80451011 has 4 divisors (see below), whose sum is σ = 80594472. Its totient is φ = 80307552.

The previous prime is 80451001. The next prime is 80451101. The reversal of 80451011 is 11015408.

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

It is a cyclic number.

It is not a de Polignac number, because 80451011 - 2⁶ = 80450947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80451001) 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, 70886 + ... + 72011.

It is an arithmetic number, because the mean of its divisors is an integer number (20148618).

Almost surely, 2^80451011 is an apocalyptic number.

80451011 is a deficient number, since it is larger than the sum of its proper divisors (143461).

80451011 is a wasteful number, since it uses less digits than its factorization.

80451011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143460.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 80451011 is about 8969.4487567520. The cubic root of 80451011 is about 431.6951492232.

Adding to 80451011 its reverse (11015408), we get a palindrome (91466419).

It can be divided in two parts, 804 and 51011, that added together give a palindrome (51815).

The spelling of 80451011 in words is "eighty million, four hundred fifty-one thousand, eleven".