76408798217 has 4 divisors (see below), whose sum is σ = 78034517376. Its totient is φ = 74783079060.

The previous prime is 76408798211. The next prime is 76408798253. The reversal of 76408798217 is 71289780467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71289780467 = 64007 ⋅1113781.

It is a cyclic number.

It is not a de Polignac number, because 76408798217 - 2¹⁶ = 76408732681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76408798211) 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, 812859509 + ... + 812859602.

It is an arithmetic number, because the mean of its divisors is an integer number (19508629344).

Almost surely, 2^76408798217 is an apocalyptic number.

It is an amenable number.

76408798217 is a deficient number, since it is larger than the sum of its proper divisors (1625719159).

76408798217 is a wasteful number, since it uses less digits than its factorization.

76408798217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625719158.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 76408798217 in words is "seventy-six billion, four hundred eight million, seven hundred ninety-eight thousand, two hundred seventeen".