76412844691 has 4 divisors (see below), whose sum is σ = 79047770400.
Its totient is φ = 73777918984.
The previous prime is 76412844649. The next prime is 76412844727. The reversal of 76412844691 is 19644821467.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19644821467 = 41 ⋅479141987.
It is a cyclic number.
It is not a de Polignac number, because 76412844691 - 211 = 76412842643 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (76412847691) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317462811 + ... + 1317462868.
It is an arithmetic number, because the mean of its divisors is an integer number (19761942600).
Almost surely, 276412844691 is an apocalyptic number.
76412844691 is a deficient number, since it is larger than the sum of its proper divisors (2634925709).
76412844691 is a wasteful number, since it uses less digits than its factorization.
76412844691 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2634925708.
The product of its digits is 2322432, while the sum is 52.
The spelling of 76412844691 in words is "seventy-six billion, four hundred twelve million, eight hundred forty-four thousand, six hundred ninety-one".