82013869400815 has 8 divisors (see below), whose sum is σ = 107363610852048. Its totient is φ = 59646450473280.

The previous prime is 82013869400809. The next prime is 82013869400843. The reversal of 82013869400815 is 51800496831028.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-82013869400815 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 1491161261833 = 82013869400815 / (8 + 2 + 0 + 1 + 3 + 8 + 6 + 9 + 4 + 0 + 0 + 8 + 1 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745580630862 + ... + 745580630971.

It is an arithmetic number, because the mean of its divisors is an integer number (13420451356506).

Almost surely, 2^{82013869400815} is an apocalyptic number.

82013869400815 is a deficient number, since it is larger than the sum of its proper divisors (25349741451233).

82013869400815 is a wasteful number, since it uses less digits than its factorization.

82013869400815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491161261849.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 82013869400815 in words is "eighty-two trillion, thirteen billion, eight hundred sixty-nine million, four hundred thousand, eight hundred fifteen".