79897505801 has 8 divisors (see below), whose sum is σ = 80494541640. Its totient is φ = 79300670848.

The previous prime is 79897505783. The next prime is 79897505839. The reversal of 79897505801 is 10850579897.

It can be written as a sum of positive squares in 4 ways, for example, as 218330176 + 79679175625 = 14776^2 + 282275^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 79897505801 - 2¹⁴ = 79897489417 is a prime.

It is a super-2 number, since 2×79897505801² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79897505881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801935 + ... + 896043.

It is an arithmetic number, because the mean of its divisors is an integer number (10061817705).

Almost surely, 2^79897505801 is an apocalyptic number.

It is an amenable number.

79897505801 is a deficient number, since it is larger than the sum of its proper divisors (597035839).

79897505801 is a wasteful number, since it uses less digits than its factorization.

79897505801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100443.

The product of its (nonzero) digits is 6350400, while the sum is 59.

The spelling of 79897505801 in words is "seventy-nine billion, eight hundred ninety-seven million, five hundred five thousand, eight hundred one".