78467828045815 has 16 divisors (see below), whose sum is σ = 101405262059136. Its totient is φ = 57945082003200.

The previous prime is 78467828045791. The next prime is 78467828045819. The reversal of 78467828045815 is 51854082876487.

It is not a de Polignac number, because 78467828045815 - 2²¹ = 78467825948663 is a prime.

It is a super-4 number, since 4×78467828045815⁴ (a number of 57 digits) contains 4444 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 (78467828045819) 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, 5816835 + ... + 13811995.

It is an arithmetic number, because the mean of its divisors is an integer number (6337828878696).

Almost surely, 2^{78467828045815} is an apocalyptic number.

78467828045815 is a deficient number, since it is larger than the sum of its proper divisors (22937434013321).

78467828045815 is a wasteful number, since it uses less digits than its factorization.

78467828045815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146170.

The product of its (nonzero) digits is 963379200, while the sum is 73.

The spelling of 78467828045815 in words is "seventy-eight trillion, four hundred sixty-seven billion, eight hundred twenty-eight million, forty-five thousand, eight hundred fifteen".