76819999999999 has 16 divisors (see below), whose sum is σ = 79466075136000. Its totient is φ = 74184435171360.

The previous prime is 76819999999961. The next prime is 76820000000099. The reversal of 76819999999999 is 99999999991867.

It is a cyclic number.

It is not a de Polignac number, because 76819999999999 - 2¹³ = 76819999991807 is a prime.

It is a super-9 number, since 9×76819999999999⁹ (a number of 126 digits) contains 999999999 as substring.

It is a Duffinian number.

76819999999999 is a modest number, since divided by 9999999 gives 7681999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76819999699999) 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, 665459617 + ... + 665575045.

It is an arithmetic number, because the mean of its divisors is an integer number (4966629696000).

Almost surely, 2^{76819999999999} is an apocalyptic number.

76819999999999 is a deficient number, since it is larger than the sum of its proper divisors (2646075136001).

76819999999999 is a wasteful number, since it uses less digits than its factorization.

76819999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160758.

The product of its digits is 1171559558736, while the sum is 112.

The spelling of 76819999999999 in words is "seventy-six trillion, eight hundred nineteen billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".