76504649191 has 4 divisors (see below), whose sum is σ = 77948133192. Its totient is φ = 75061165192.

The previous prime is 76504649159. The next prime is 76504649233. The reversal of 76504649191 is 19194640567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19194640567 = 5387 ⋅3563141.

It is a cyclic number.

It is not a de Polignac number, because 76504649191 - 2⁵ = 76504649159 is a prime.

It is a super-3 number, since 3×76504649191³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76504649491) 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, 721741921 + ... + 721742026.

It is an arithmetic number, because the mean of its divisors is an integer number (19487033298).

Almost surely, 2^76504649191 is an apocalyptic number.

76504649191 is a deficient number, since it is larger than the sum of its proper divisors (1443484001).

76504649191 is a wasteful number, since it uses less digits than its factorization.

76504649191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443484000.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 76504649191 in words is "seventy-six billion, five hundred four million, six hundred forty-nine thousand, one hundred ninety-one".