79865303421 has 8 divisors (see below), whose sum is σ = 106488941824. Its totient is φ = 53242600320.

The previous prime is 79865303411. The next prime is 79865303443. The reversal of 79865303421 is 12430356897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79865303421 - 2¹⁷ = 79865172349 is a prime.

It is the 282605-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79865303411) by changing a digit.

It is a nontrivial repunit in base 282604.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645 + ... + 399666.

It is an arithmetic number, because the mean of its divisors is an integer number (13311117728).

It is a 2-persistent number, because it is pandigital, and so is 2⋅79865303421 = 159730606842, but 3⋅79865303421 = 239595910263 is not.

Almost surely, 2^79865303421 is an apocalyptic number.

It is an amenable number.

79865303421 is a deficient number, since it is larger than the sum of its proper divisors (26623638403).

79865303421 is a wasteful number, since it uses less digits than its factorization.

79865303421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467651.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 79865303421 in words is "seventy-nine billion, eight hundred sixty-five million, three hundred three thousand, four hundred twenty-one".