80780511 has 8 divisors (see below), whose sum is σ = 123094144. Its totient is φ = 46160280.

The previous prime is 80780503. The next prime is 80780519. The reversal of 80780511 is 11508708.

It is an interprime number because it is at equal distance from previous prime (80780503) and next prime (80780519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80780511 - 2³ = 80780503 is a prime.

It is a super-2 number, since 2×80780511² = 13050981914842242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80780519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1923325 + ... + 1923366.

It is an arithmetic number, because the mean of its divisors is an integer number (15386768).

Almost surely, 2^80780511 is an apocalyptic number.

80780511 is a deficient number, since it is larger than the sum of its proper divisors (42313633).

80780511 is a wasteful number, since it uses less digits than its factorization.

80780511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846701.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 80780511 is about 8987.7978949240. The cubic root of 80780511 is about 432.2837053180.

It can be divided in two parts, 807 and 80511, that added together give a palindrome (81318).

The spelling of 80780511 in words is "eighty million, seven hundred eighty thousand, five hundred eleven".