98726605765 has 4 divisors (see below), whose sum is σ = 118471926924. Its totient is φ = 78981284608.

The previous prime is 98726605763. The next prime is 98726605777. The reversal of 98726605765 is 56750662789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46975360644 + 51751245121 = 216738^2 + 227489^2 .

It is a cyclic number.

It is not a de Polignac number, because 98726605765 - 2¹ = 98726605763 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 (98726605763) 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, 9872660572 + ... + 9872660581.

It is an arithmetic number, because the mean of its divisors is an integer number (29617981731).

Almost surely, 2^98726605765 is an apocalyptic number.

It is an amenable number.

98726605765 is a deficient number, since it is larger than the sum of its proper divisors (19745321159).

98726605765 is a wasteful number, since it uses less digits than its factorization.

98726605765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19745321158.

The product of its (nonzero) digits is 38102400, while the sum is 61.

The spelling of 98726605765 in words is "ninety-eight billion, seven hundred twenty-six million, six hundred five thousand, seven hundred sixty-five".