76479071549 has 4 divisors (see below), whose sum is σ = 76481040960. Its totient is φ = 76477102140.

The previous prime is 76479071509. The next prime is 76479071561. The reversal of 76479071549 is 94517097467.

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: 94517097467 = 13 ⋅7270545959.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76479071549 is a prime.

It is a super-2 number, since 2×76479071549² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76479071509) 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, 925259 + ... + 1004520.

It is an arithmetic number, because the mean of its divisors is an integer number (19120260240).

Almost surely, 2^76479071549 is an apocalyptic number.

It is an amenable number.

76479071549 is a deficient number, since it is larger than the sum of its proper divisors (1969411).

76479071549 is a wasteful number, since it uses less digits than its factorization.

76479071549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969410.

The product of its (nonzero) digits is 13335840, while the sum is 59.

The spelling of 76479071549 in words is "seventy-six billion, four hundred seventy-nine million, seventy-one thousand, five hundred forty-nine".