79052266621 has 4 divisors (see below), whose sum is σ = 79052849500. Its totient is φ = 79051683744.

The previous prime is 79052266619. The next prime is 79052266649. The reversal of 79052266621 is 12666225097.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14134832100 + 64917434521 = 118890^2 + 254789^2 .

It is a cyclic number.

It is not a de Polignac number, because 79052266621 - 2¹ = 79052266619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79052266021) 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, 30655 + ... + 398803.

It is an arithmetic number, because the mean of its divisors is an integer number (19763212375).

Almost surely, 2^79052266621 is an apocalyptic number.

It is an amenable number.

79052266621 is a deficient number, since it is larger than the sum of its proper divisors (582879).

79052266621 is a wasteful number, since it uses less digits than its factorization.

79052266621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582878.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 79052266621 in words is "seventy-nine billion, fifty-two million, two hundred sixty-six thousand, six hundred twenty-one".