104257777765 has 16 divisors (see below), whose sum is σ = 129434039280. Its totient is φ = 80523555840.

The previous prime is 104257777763. The next prime is 104257777781. The reversal of 104257777765 is 567777752401.

It can be written as a sum of positive squares in 8 ways, for example, as 11280351681 + 92977426084 = 106209^2 + 304922^2 .

It is not a de Polignac number, because 104257777765 - 2¹ = 104257777763 is a prime.

It is a super-2 number, since 2×104257777765² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104257777763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2490205 + ... + 2531725.

It is an arithmetic number, because the mean of its divisors is an integer number (8089627455).

Almost surely, 2^104257777765 is an apocalyptic number.

It is an amenable number.

104257777765 is a deficient number, since it is larger than the sum of its proper divisors (25176261515).

104257777765 is a wasteful number, since it uses less digits than its factorization.

104257777765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58872.

The product of its (nonzero) digits is 20168400, while the sum is 58.

The spelling of 104257777765 in words is "one hundred four billion, two hundred fifty-seven million, seven hundred seventy-seven thousand, seven hundred sixty-five".