79451408481 has 4 divisors (see below), whose sum is σ = 105935211312. Its totient is φ = 52967605652.

The previous prime is 79451408401. The next prime is 79451408521. The reversal of 79451408481 is 18480415497.

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: 18480415497 = 3 ⋅6160138499.

It is a cyclic number.

It is not a de Polignac number, because 79451408481 - 2¹⁰ = 79451407457 is a prime.

It is a super-2 number, since 2×79451408481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79451408401) 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, 13241901411 + ... + 13241901416.

It is an arithmetic number, because the mean of its divisors is an integer number (26483802828).

Almost surely, 2^79451408481 is an apocalyptic number.

It is an amenable number.

79451408481 is a deficient number, since it is larger than the sum of its proper divisors (26483802831).

79451408481 is a wasteful number, since it uses less digits than its factorization.

79451408481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26483802830.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 79451408481 in words is "seventy-nine billion, four hundred fifty-one million, four hundred eight thousand, four hundred eighty-one".