80100015 has 16 divisors (see below), whose sum is σ = 130262496. Its totient is φ = 42019200.

The previous prime is 80100011. The next prime is 80100023. The reversal of 80100015 is 51000108.

It is a happy number.

It is not a de Polignac number, because 80100015 - 2² = 80100011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 80099967 and 80100003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80100011) 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, 42856 + ... + 44685.

It is an arithmetic number, because the mean of its divisors is an integer number (8141406).

Almost surely, 2^80100015 is an apocalyptic number.

80100015 is a deficient number, since it is larger than the sum of its proper divisors (50162481).

80100015 is a wasteful number, since it uses less digits than its factorization.

80100015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87610.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 80100015 is about 8949.8611721076. The cubic root of 80100015 is about 431.0664263837.

The spelling of 80100015 in words is "eighty million, one hundred thousand, fifteen".