76538999069 has 8 divisors (see below), whose sum is σ = 82747344120. Its totient is φ = 70376472576.

The previous prime is 76538999057. The next prime is 76538999081. The reversal of 76538999069 is 96099983567.

It is an interprime number because it is at equal distance from previous prime (76538999057) and next prime (76538999081).

It can be written as a sum of positive squares in 4 ways, for example, as 36638936569 + 39900062500 = 191413^2 + 199750^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 76538999069 - 2¹⁶ = 76538933533 is a prime.

It is a super-2 number, since 2×76538999069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76538998993 and 76538999011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76538996069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11451164 + ... + 11457845.

It is an arithmetic number, because the mean of its divisors is an integer number (10343418015).

Almost surely, 2^76538999069 is an apocalyptic number.

It is an amenable number.

76538999069 is a deficient number, since it is larger than the sum of its proper divisors (6208345051).

76538999069 is a wasteful number, since it uses less digits than its factorization.

76538999069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22909279.

The product of its (nonzero) digits is 198404640, while the sum is 71.

The spelling of 76538999069 in words is "seventy-six billion, five hundred thirty-eight million, nine hundred ninety-nine thousand, sixty-nine".