78276499819 has 16 divisors (see below), whose sum is σ = 89957020608. Its totient is φ = 66721254912.

The previous prime is 78276499783. The next prime is 78276499853. The reversal of 78276499819 is 91899467287.

It is a cyclic number.

It is not a de Polignac number, because 78276499819 - 2¹⁷ = 78276368747 is a prime.

It is a super-2 number, since 2×78276499819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78276499919) 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, 1269799 + ... + 1330015.

It is an arithmetic number, because the mean of its divisors is an integer number (5622313788).

Almost surely, 2^78276499819 is an apocalyptic number.

78276499819 is a deficient number, since it is larger than the sum of its proper divisors (11680520789).

78276499819 is a wasteful number, since it uses less digits than its factorization.

78276499819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61254.

The product of its digits is 109734912, while the sum is 70.

The spelling of 78276499819 in words is "seventy-eight billion, two hundred seventy-six million, four hundred ninety-nine thousand, eight hundred nineteen".